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Polar metals taxonomy for materials classification and discovery

Daniel Hickox-Young*, Danilo Puggioni†, and James M. Rondinelli‡

  • Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA

  • *Present address: Department of Mathematics, Computer Science and Physics, Roanoke College, Salem, Virginia 24153, USA; hickoxyoung@roanoke.edu
  • †danilo.puggioni@northwestern.edu
  • ‡jrondinelli@northwestern.edu
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Phys. Rev. Materials 7, 010301 – Published 9 January, 2023

DOI: https://doi.org/10.1103/PhysRevMaterials.7.010301

Abstract

Over the past decade, materials that combine broken inversion symmetry with metallic conductivity have gone from a thought experiment to one of the fastest growing research topics. In 2013, the observation of the first uncontested polar transition in a metal, LiOsO3, inspired a surge of theoretical and experimental work on the subject, uncovering a host of materials which combine properties previously thought to be contraindicated [Shi et al., Nat. Mater. 12, 1024 (2013)]. As is often the case in a nascent field, the sudden rise in interest has been accompanied by diverse (and sometimes conflicting) terminology. Although “ferroelectriclike” metals are well defined in theory, i.e., materials that undergo a symmetry-lowering transition to a polar phase while exhibiting metallic electron transport, real materials find a myriad of ways to push the boundaries of this definition. Here, we review and explore the burgeoning polar metal frontier from the perspectives of theory, simulation, and experiment while introducing a unified taxonomy. The framework allows one to describe, identify, and classify polar metals; we also use it to discuss some of the fundamental tensions between theory and models of reality inherent in the terms “ferroelectric” and “metals.” In addition, we highlight shortcomings of electrostatic doping simulations in modeling different subclasses of polar metals, noting how the assumptions of this approach depart from experiment. We include a survey of known materials that combine polar symmetry with metallic conductivity, classified according to the mechanisms used to harmonize those two orders and their resulting properties. We conclude by describing opportunities for the discovery of novel polar metals by utilizing our taxonomy.

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References (157)

  1. P. W. Anderson and E. I. Blount, Symmetry Considerations on Martensitic Transformations: “Ferroelectric” Metals? Phys. Rev. Lett. 14, 217 (1965).
  2. E. K. Salje, Ferroelastic materials, Annu. Rev. Mater. Res. 42, 265 (2012).
  3. J. L. de Lagrange, Sur l'attraction des sphéroïdes elliptiques, Nouv. Mém. Acad. Royale Berlin année 3, 619 (1773).
  4. C. F. Gauss, Theoria attractionis corporum sphaeroidicorum ellipticorum homogeneorum, in Werke (Springer, Berlin, 1877), pp. 3–22.
  5. W. Cochran, Crystal Stability and the Theory of Ferroelectricity, Phys. Rev. Lett. 3, 412 (1959).
  6. R. E. Cohen, Origin of ferroelectricity in perovskite oxides, Nature (London) 358, 136 (1992).
  7. Y. Shi, Y. Guo, X. Wang, A. J. Princep, D. Khalyavin, P. Manuel, Y. Michiue, A. Sato, K. Tsuda, S. Yu, M. Arai, Y. Shirako, M. Akaogi, N. Wang, K. Yamaura, and A. T. Boothroyd, A ferroelectric-like structural transition in a metal, Nat. Mater. 12, 1024 (2013).
  8. D. Puggioni and J. M. Rondinelli, Designing a robustly metallic noncenstrosymmetric ruthenate oxide with large thermopower anisotropy, Nat. Commun. 5, 3432 (2014).
  9. D. Varjas, A. G. Grushin, R. Ilan, and J. E. Moore, Dynamical Piezoelectric and Magnetopiezoelectric Effects in Polar Metals from Berry Phases and Orbital Moments, Phys. Rev. Lett. 117, 257601 (2016).
  10. L. Wu, S. Patankar, T. Morimoto, N. L. Nair, E. Thewalt, A. Little, J. G. Analytis, J. E. Moore, and J. Orenstein, Giant anisotropic nonlinear optical response in transition metal monopnictide Weyl semimetals, Nat. Phys. 13, 350 (2017).
  11. H. Gao, Y. Kim, J. W. F. Venderbos, C. L. Kane, E. J. Mele, A. M. Rappe, and W. Ren, Dirac-Weyl Semimetal: Coexistence of Dirac and Weyl Fermions in Polar Hexagonal ABC Crystals, Phys. Rev. Lett. 121, 106404 (2018).
  12. X. He and K. juan Jin, Persistence of polar distortion with electron doping in lone-pair driven ferroelectrics, Phys. Rev. B 94, 224107 (2016).
  13. K. Ahadi, L. Galletti, Y. Li, S. Salmani-Rezaie, W. Wu, and S. Stemmer, Enhancing superconductivity in SrTiO3 films with strain, Sci. Adv. 5, eaaw0120 (2019).
  14. J. F. Schooley, W. R. Hosler, and M. L. Cohen, Superconductivity in Semiconducting SrTiO3, Phys. Rev. Lett. 12, 474 (1964).
  15. T. Kolodiazhnyi, M. Tachibana, H. Kawaji, J. Hwang, and E. Takayama-Muromachi, Persistence of Ferroelectricity in BaTiO3 Through the Insulator-Metal Transition, Phys. Rev. Lett. 104, 147602 (2010).
  16. S. Lei, M. Gu, D. Puggioni, G. Stone, J. Peng, J. Ge, Y. Wang, B. Wang, Y. Yuan, K. Wang, Z. Mao, J. M. Rondinelli, and V. Gopalan, Observation of quasi-two-dimensional polar domains and ferroelastic switching in a metal, Ca3Ru2O7, Nano Lett. 18, 3088 (2018).
  17. Y. Yoshida, S.-I. Ikeda, H. Matsuhata, N. Shirakawa, C. H. Lee, and S. Katano, Crystal and magnetic structure of Ca3Ru2O7, Phys. Rev. B 72, 054412 (2005).
  18. Z. Fei, W. Zhao, T. A. Palomaki, B. Sun, M. K. Miller, Z. Zhao, J. Yan, X. Xu, and D. H. Cobden, Ferroelectric switching of a two-dimensional metal, Nature (London) 560, 336 (2018).
  19. H. Zheng, B. C. Wilfong, D. Hickox-Young, J. M. Rondinelli, P. Y. Zavalij, and E. E. Rodriguez, Polar ferromagnetic metal by intercalation of metal–amine complexes, Chem. Mater. 33, 4936 (2021).
  20. A. J. E. Rettie, C. D. Malliakas, A. S. Botana, J.-K. Bao, D. Y. Chung, and M. G. Kanatzidis, KCu7P3: A two-dimensional noncentrosymmetric metallic pnictide, Inorg. Chem. 58, 10201 (2019).
  21. N. A. Benedek and T. Birol, ‘ferroelectric’ metals reexamined: fundamental mechanisms and design considerations for new materials, J. Mater. Chem. C 4, 4000 (2016).
  22. W. X. Zhou and A. Ariando, Review on ferroelectric/polar metals, Jpn. J. Appl. Phys. 59, SI0802 (2020).
  23. S. Bhowal and N. A. Spaldin, Polar metals: Principles and prospects, arXiv:2210.02993.
  24. J. Nye and P. Nye, Physical Properties of Crystals: Their Representation by Tensors and Matrices, Oxford Science Publications (Clarendon, Oxford, 1985).
  25. S. Baroni, P. Giannozzi, and A. Testa, Green's-Function Approach to Linear Response in Solids, Phys. Rev. Lett. 58, 1861 (1987).
  26. R. Resta, Macroscopie electric polarization as a geometric quantum phase, Europhys. Lett. 22, 133 (1993).
  27. R. D. King-Smith and D. Vanderbilt, Theory of polarization of crystalline solids, Phys. Rev. B 47, 1651 (1993).
  28. D. Vanderbilt, Berry Phases in Electronic Structure Theory: Electric Polarization, Orbital Magnetization and Topological Insulators (Cambridge University Press, Cambridge, 2018).
  29. R. E. Cohen and H. Krakauer, Lattice dynamics and origin of ferroelectricity in BaTiO3: Linearized-augmented-plane-wave total-energy calculations, Phys. Rev. B 42, 6416 (1990).
  30. J.-x. Gu, K.-j. Jin, C. Ma, Q.-h. Zhang, L. Gu, C. Ge, J.-s. Wang, C. Wang, H.-Z. Guo, and G.-Z. Yang, Coexistence of polar distortion and metallicity in PbTi1−xNbxO3, Phys. Rev. B 96, 165206 (2017).
  31. H. J. Xiang, Origin of polar distortion in LiNbO3-type “ferroelectric” metals: Role of A-site instability and short-range interactions, Phys. Rev. B 90, 094108 (2014).
  32. F. Jin, A. Zhang, J. Ji, K. Liu, L. Wang, Y. Shi, Y. Tian, X. Ma, and Q. Zhang, Raman phonons in the ferroelectric-like metal LiOsO3, Phys. Rev. B 93, 064303 (2016).
  33. A. Filippetti, V. Fiorentini, F. Ricci, P. Delugas, and J. Íñiguez, Prediction of a native ferroelectric metal, Nat. Commun. 7, 11211 (2016).
  34. F. Bruneval, C. Varvenne, J.-P. Crocombette, and E. Clouet, Pressure, relaxation volume, and elastic interactions in charged simulation cells, Phys. Rev. B 91, 024107 (2015).
  35. Y. Iwazaki, T. Suzuki, Y. Mizuno, and S. Tsuneyuki, Doping-induced phase transitions in ferroelectric BaTiO3 from first-principles calculations, Phys. Rev. B 86, 214103 (2012).
  36. J. F. Scott, Ferroelectrics go bananas, J. Phys.: Condens. Matter 20, 021001 (2008).
  37. W. Kohn, Theory of the insulating state, Phys. Rev. 133, A171 (1964).
  38. P. P. Edwards, M. T. Lodge, F. Hensel, and R. Redmer, ‘... a metal conducts and a non-metal doesn't', Philos. Trans. R. Soc. London A 368, 941 (2010).
  39. P. P. Edwards, in Nevill Mott: Reminiscences and Appreciations, edited by E. A. Davis (CRC Press, Boca Raton, FL, 1998).
  40. K. S. Takahashi, Y. Matsubara, M. S. Bahramy, N. Ogawa, D. Hashizume, Y. Tokura, and M. Kawasaki, Polar metal phase stabilized in strained La-doped BaTiO3 films, Sci. Rep. 7, 4631 (2017).
  41. J. Fujioka, A. Doi, D. Okuyama, D. Morikawa, T. Arima, K. N. Okada, Y. Kaneko, T. Fukuda, H. Uchiyama, D. Ishikawa, A. Q. R. Baron, K. Kato, M. Takata, and Y. Tokura, Ferroelectric-like metallic state in electron doped BaTiO3, Sci. Rep. 5, 13207 (2015).
  42. T. Kolodiazhnyi, Insulator-metal transition and anomalous sign reversal of the dominant charge carriers in perovskite BaTiO3−δ, Phys. Rev. B 78, 045107 (2008).
  43. D. J. Scalapino, S. R. White, and S. Zhang, Insulator, metal, or superconductor: The criteria, Phys. Rev. B 47, 7995 (1993).
  44. R. Resta, Why are insulators insulating and metals conducting? J. Phys.: Condens. Matter 14, R625 (2002).
  45. N. W. Ashcroft and N. D. Mermin, Solid State Physics (Dover, New York, 1976).
  46. F. Bloch, Zum elektrischen widerstandsgesetz bei tiefen temperaturen, Z. Phys. 59, 208 (1930).
  47. E. Grüneisen, Die abhängigkeit des elektrischen widerstandes reiner metalle von der temperatur, Ann. Phys. (Berlin) 408, 530 (1933).
  48. Y. Yoshida, I. Nagai, S.-I. Ikeda, N. Shirakawa, M. Kosaka, and N. Môri, Quasi-two-dimensional metallic ground state of Ca3Ru2O7, Phys. Rev. B 69, 220411(R) (2004).
  49. J. Hwang, T. Kolodiazhnyi, J. Yang, and M. Couillard, Doping and temperature-dependent optical properties of oxygen-reduced BaTiO3−δ, Phys. Rev. B 82, 214109 (2010).
  50. A. J. Millis and S. N. Coppersmith, Variational wave functions and the Mott transition, Phys. Rev. B 43, 13770 (1991).
  51. C. C. Homes, T. Timusk, R. Liang, D. A. Bonn, and W. N. Hardy, Optical Conductivity of c Axis Oriented YBa2Cu3O6.70: Evidence for a Pseudogap, Phys. Rev. Lett. 71, 1645 (1993).
  52. C. E. Dreyer, S. Coh, and M. Stengel, Nonadiabatic Born Effective Charges in Metals and the Drude Weight, Phys. Rev. Lett. 128, 095901 (2022).
  53. W. E. Anderson, R. W. Alexander, and R. J. Bell, Surface Plasmons and the Reflectivity of n-Type InSb, Phys. Rev. Lett. 27, 1057 (1971).
  54. C. Z. Bi, J. Y. Ma, J. Yan, X. Fang, B. R. Zhao, D. Z. Yao, and X. G. Qiu, Electron–phonon coupling in Nb-doped SrTiO3 single crystal, J. Phys.: Condens. Matter 18, 2553 (2006).
  55. I. loVecchio, G. Giovannetti, M. Autore, P. DiPietro, A. Perucchi, J. He, K. Yamaura, M. Capone, and S. Lupi, Electronic correlations in the ferroelectric metallic state of LiOsO3, Phys. Rev. B 93, 161113(R) (2016).
  56. I. B. Bersuker, Pseudo-Jahn–Teller effect—A two-state paradigm in formation, deformation, and transformation of molecular systems and solids, Chem. Rev. 113, 1351 (2013).
  57. D. Hickox-Young, D. Puggioni, and J. M. Rondinelli, Persistent polar distortions from covalent interactions in doped BaTiO3, Phys. Rev. B 102, 014108 (2020).
  58. P. Ghosez, X. Gonze, and J.-P. Michenaud, Coulomb interaction and ferroelectric instability of BaTiO3, Europhys. Lett. 33, 713 (1996).
  59. S. Salmani-Rezaie, K. Ahadi, W. M. Strickland, and S. Stemmer, Order-disorder ferroelectric transition of strained SrTiO3, Phys. Rev. Lett. 125, 087601 (2020).
  60. C. Chepkemboi, K. Jorgensen, J. Sato, and G. Laurita, Strategies and considerations for least-squares analysis of total scattering data, ACS Omega 7, 14402 (2022).
  61. G. Giovannetti, D. Puggioni, J. M. Rondinelli, and M. Capone, Interplay between electron correlations and polar displacements in metallic SrEuMo2O6, Phys. Rev. B 93, 115147 (2016).
  62. D. Puggioni, G. Giovannetti, M. Capone, and J. M. Rondinelli, Design of a Mott Multiferroic from a Nonmagnetic Polar Metal, Phys. Rev. Lett. 115, 087202 (2015).
  63. S. Mülbauer, B. Binz, F. Jonietz, C. Pfleiderer, A. Rosch, A. Neubauer, R. Georgii, and P. Böni, Skyrmion lattice in a chiral magnet, Science 323, 915 (2009).
  64. T. Schulz, R. Ritz, A. Bauer, M. Halder, M. Wagner, C. Franz, C. Pfleiderer, K. Everschor, M. Garst, and A. Rosch, Emergent electrodynamics of skyrmions in a chiral magnet, Nat. Phys. 8, 301 (2012).
  65. X. Z. Yu, Y. Onose, N. Kanazawa, J. H. Park, J. H. Han, Y. Matsui, N. Nagaosa, and Y. Tokura, Real-space observation of a two-dimensional skyrmion crystal, Nature (London) 465, 901 (2010).
  66. S.-W. Cheong and X. Xu, Magnetic chirality, npj Quantum Mater. 7, 40 (2022).
  67. An american national standard IEEE standard definitions of terms associated with ferroelectric and related materials, IEEE Transactions Ultrasonics, Ferroelect. Freq. Control 50, 1 (2003).
  68. K. Aizu, Possible species of ``ferroelastic” crystals and of simultaneously ferroelectric and ferroelastic crystals, J. Phys. Soc. Jpn. 27, 387 (1969).
  69. H. Sakai, K. Ikeura, M. S. Bahramy, N. Ogawa, D. Hashizume, J. Fujioka, Y. Tokura, and S. Ishiwata, Critical enhancement of thermopower in a chemically tuned polar semimetal MoTe2, Sci. Adv. 2, e1601378 (2016).
  70. F. Jin, L. Wang, A. Zhang, J. Ji, Y. Shi, X. Wang, R. Yu, J. Zhang, E. W. Plummer, and Q. Zhang, Raman interrogation of the ferroelectric phase transition in polar metal LiOsO3, Proc. Natl. Acad. Sci. USA 116, 20322 (2019).
  71. G. Stone, D. Puggioni, S. Lei, M. Gu, K. Wang, Y. Wang, J. Ge, X.-Z. Lu, Z. Mao, J. M. Rondinelli, and V. Gopalan, Atomic and electronic structure of domains walls in a polar metal, Phys. Rev. B 99, 014105 (2019).
  72. T. H. Kim, D. Puggioni, Y. Yuan, L. Xie, H. Zhou, N. Campbell, P. J. Ryan, Y. Choi, J.-W. Kim, J. R. Patzner, S. Ryu, J. P. Podkaminer, J. Irwin, Y. Ma, C. J. Fennie, M. S. Rzchowski, X. Q. Pan, V. Gopalan, J. M. Rondinelli, and C. B. Eom, Polar metals by geometric design, Nature (London) 533, 68 (2016).
  73. H. Padmanabhan, Y. Park, D. Puggioni, Y. Yuan, Y. Cao, L. Gasparov, Y. Shi, J. Chakhalian, J. M. Rondinelli, and V. Gopalan, Linear and nonlinear optical probe of the ferroelectric-like phase transition in a polar metal, LiOsO3, Appl. Phys. Lett. 113, 122906 (2018).
  74. N. J. Laurita, A. Ron, J.-Y. Shan, D. Puggioni, N. Z. Koocher, K. Yamaura, Y. Shi, J. M. Rondinelli, and D. Hsieh, Evidence for the weakly coupled electron mechanism in an Anderson-Blount polar metal, Nat. Commun. 10, 3217 (2019).
  75. V. K. Wadhawan, Ferroelasticity, Bulletin Materials Science 6, 733 (1984).
  76. G. Slosarek, A. Heuer, H. Zimmermann, and U. Haeberlen, A study of the paraelectric-ferroelectric phase transition of triglycine sulphate by deuteron nuclear magnetic resonance and relaxation, J. Phys.: Condens. Matter 1, 5931 (1989).
  77. V. Gopalan, V. Dierolf, and D. A. Scrymgeour, Defect–domain wall interactions in trigonal ferroelectrics, Annu. Rev. Mater. Res. 37, 449 (2007).
  78. K. Shapovalov, P. Yudin, A. Tagantsev, E. Eliseev, A. Morozovska, and N. Setter, Elastic Coupling between Nonferroelastic Domain Walls, Phys. Rev. Lett. 113, 207601 (2014).
  79. Y.-W. Fang and H. Chen, Design of a multifunctional polar metal via first-principles high-throughput structure screening, Commun. Mater. 1, 1 (2020).
  80. H. Watanabe and Y. Yanase, Magnetic hexadecapole order and magnetopiezoelectric metal state in Ba1−xKxMn2As2, Phys. Rev. B 96, 064432 (2017).
  81. https://mtd.mccormick.northwestern.edu/polar-metals-materials-database/
  82. E. Bauer, G. Hilscher, H. Michor, C. Paul, E. W. Scheidt, A. Gribanov, Y. Seropegin, H. No'el, M. Sigrist, and P. Rogl, Heavy Fermion Superconductivity and Magnetic Order in Noncentrosymmetric CePt3Si, Phys. Rev. Lett. 92, 027003 (2004).
  83. Y. Jiao, Y.-W. Fang, J. Sun, P. Shan, Z. Yu, H. L. Feng, B. Wang, H. Ma, Y. Uwatoko, K. Yamaura, Y. Guo, H. Chen, and J. Cheng, Coupled magnetic and structural phase transitions in the antiferromagnetic polar metal Pb2CoOsO6 under pressure, Phys. Rev. B 102, 144418 (2020).
  84. C. W. Rischau, X. Lin, C. P. Grams, D. Finck, S. Harms, J. Engelmayer, T. Lorenz, Y. Gallais, B. Fauqué, J. Hemberger, and K. Behnia, A ferroelectric quantum phase transition inside the superconducting dome of Sr1−xCaxTiO3−δ, Nat. Phys. 13, 643 (2017).
  85. E. Berger, S. Jamnuch, C. B. Uzundal, C. Woodahl, H. Padmanabhan, A. Amado, P. Manset, Y. Hirata, Y. Kubota, S. Owada, K. Tono, M. Yabashi, C. Wang, Y. Shi, V. Gopalan, C. P. Schwartz, W. S. Drisdell, I. Matsuda, J. W. Freeland, T. A. Pascal et al., Extreme ultraviolet second harmonic generation spectroscopy in a polar metal, Nano Lett. 21, 6095 (2021).
  86. Y. Pan, A. M. Nikitin, T. V. Bay, Y. K. Huang, C. Paulsen, B. H. Yan, and A. de Visser, Superconductivity and magnetic order in the noncentrosymmetric half-Heusler compound ErPdBi, Europhys. Lett. 104, 27001 (2013).
  87. J. Jiang, Z. L. Bai, Z. H. Chen, L. He, D. W. Zhang, Q. H. Zhang, J. A. Shi, M. H. Park, J. F. Scott, C. S. Hwang, and A. Q. Jiang, Temporary formation of highly conducting domain walls for non-destructive read-out of ferroelectric domain-wall resistance switching memories, Nat. Mater. 17, 49 (2018).
  88. T. Choi, Y. Horibe, H. T. Yi, Y. J. Choi, W. Wu, and S.-W. Cheong, Insulating interlocked ferroelectric and structural antiphase domain walls in multiferroic YMnO3, Nat. Mater. 9, 253 (2010).
  89. K. Jiang, R. Zhao, P. Zhang, Q. Deng, J. Zhang, W. Li, Z. Hu, H. Yang, and J. Chu, Strain and temperature dependent absorption spectra studies for identifying the phase structure and band gap of EuTiO3 perovskite films, Phys. Chem. Chem. Phys. 17, 31618 (2015).
  90. T. S. Holstad, T. M. Ræder, D. M. Evans, D. R. Småbråten, S. Krohns, J. Schaab, Z. Yan, E. Bourret, A. T. J. van Helvoort, T. Grande, S. M. Selbach, J. C. Agar, and D. Meier, Application of a long short-term memory for deconvoluting conductance contributions at charged ferroelectric domain walls, npj Comput. Mater. 6, 163 (2020).
  91. C. Cantoni, J. Gazquez, F. M. Granozio, M. P. Oxley, M. Varela, A. R. Lupini, S. J. Pennycook, C. Aruta, U. S. di Uccio, P. Perna, and D. Maccariello, Electron transfer and ionic displacements at the origin of the 2d electron gas at the LAO/STO interface: Direct measurements with atomic-column spatial resolution, Adv. Mater. 24, 3952 (2012).
  92. J. Bréhin, F. Trier, L. M. Vicente-Arche, P. Hemme, P. Noël, M. Cosset-Chéneau, J.-P. Attané, L. Vila, A. Sander, Y. Gallais, A. Sacuto, B. Dkhil, V. Garcia, S. Fusil, A. Barthélémy, M. Cazayous, and M. Bibes, Switchable two-dimensional electron gas based on ferroelectric Ca:SrTiO3, Phys. Rev. Mater. 4, 041002(R) (2020).
  93. P. Noël, F. Trier, L. M. V. Arche, J. Bréhin, D. C. Vaz, V. Garcia, S. Fusil, A. Barthélémy, L. Vila, M. Bibes, and J.-P. Attané, Non-volatile electric control of spin–charge conversion in a SrTiO3 rashba system, Nature (London) 580, 483 (2020).
  94. J. Bréhin, Y. Chen, M. D'Antuono, S. Varotto, D. Stornaiuolo, C. Piamonteze, J. Varignon, M. Salluzzo, and M. Bibes, A multiferroic two-dimensional electron gas, arXiv:2206.03843.
  95. Y. Cao, V. Fatemi, S. Fang, K. Watanabe, T. Taniguchi, E. Kaxiras, and P. Jarillo-Herrero, Unconventional superconductivity in magic-angle graphene superlattices, Nature (London) 556, 43 (2018).
  96. W. X. Zhou, H. J. Wu, J. Zhou, S. W. Zeng, C. J. Li, M. S. Li, R. Guo, J. X. Xiao, Z. Huang, W. M. Lv, K. Han, P. Yang, C. G. Li, Z. S. Lim, H. Wang, Y. Zhang, S. J. Chua, K. Y. Zeng, T. Venkatesan, J. S. Chen et al., Artificial two-dimensional polar metal by charge transfer to a ferroelectric insulator, Commun. Phys. 2, 125 (2019).
  97. H. J. Zhao, A. Filippetti, C. Escorihuela-Sayalero, P. Delugas, E. Canadell, L. Bellaiche, V. Fiorentini, and J. Íñiguez, Meta-screening and permanence of polar distortion in metallized ferroelectrics, Phys. Rev. B 97, 054107 (2018).
  98. S. Lee, R. H. T. Wilke, S. Trolier-McKinstry, S. Zhang, and C. A. Randall, SrxBa1−xNb2O6−δ ferroelectric-thermoelectrics: Crystal anisotropy, conduction mechanism, and power factor, Appl. Phys. Lett. 96, 031910 (2010).
  99. S. Lee, J. A. Bock, S. Trolier-McKinstry, and C. A. Randall, Ferroelectric-thermoelectricity and Mott transition of ferroelectric oxides with high electronic conductivity, J. Eur. Ceram. Soc. 32, 3971 (2012).
  100. A. Banik, T. Ghosh, R. Arora, M. Dutta, J. Pandey, S. Acharya, A. Soni, U. V. Waghmare, and K. Biswas, Engineering ferroelectric instability to achieve ultralow thermal conductivity and high thermoelectric performance in Sn1−xGexTe, Energy Environ. Sci. 12, 589 (2019).
  101. D. Dangić, S. Fahy, and I. Savić, Giant thermoelectric power factor in charged ferroelectric domain walls of GeTe with van Hove singularities, npj Comput. Mater. 6, 195 (2020).
  102. T. Nakajima, H. Oike, A. Kikkawa, E. P. Gilbert, N. Booth, K. Kakurai, Y. Taguchi, Y. Tokura, F. Kagawa, and T. hisa Arima, Skyrmion lattice structural transition in MnSi, Sci. Adv. 3, e1602562 (2017).
  103. Y. Zhou and K. M. Rabe, Coupled Nonpolar-Polar Metal-Insulator Transition in SrCrO3/SrTiO3 Superlattices: A First-Principles Study, Phys. Rev. Lett. 115, 106401 (2015).
  104. Y. Zhang, J.-J. Gong, C.-F. Li, L. Lin, Z.-B. Yan, S. Dong, and J.-M. Liu, Strain-Induced Slater Transition in Polar Metal LiOsO3, Phys. Status Solidi RRL 13, 1900436 (2019).
  105. S. Li and T. Birol, Free-Carrier-Induced Ferroelectricity in Layered Perovskites, Phys. Rev. Lett. 127, 087601 (2021).
  106. T. Cao, G. Ren, D.-F. Shao, E. Y. Tsymbal, and R. Mishra, Stabilizing polar phases in binary metal oxides by hole doping, arXiv:2209.09436.
  107. K. Nisi, S. Subramanian, W. He, K. A. Ulman, H. El-Sherif, F. Sigger, M. Lassaunière, M. T. Wetherington, N. Briggs, J. Gray, A. W. Holleitner, N. Bassim, S. Y. Quek, J. A. Robinson, and U. Wurstbauer, Light–matter interaction in quantum confined 2D polar metals, Adv. Funct. Mater. 31, 2005977 (2021).
  108. M. A. Steves, Y. Wang, N. Briggs, T. Zhao, H. El-Sherif, B. M. Bersch, S. Subramanian, C. Dong, T. Bowen, A. D. L. F. Duran, K. Nisi, M. Lassaunière, U. Wurstbauer, N. D. Bassim, J. Fonseca, J. T. Robinson, V. H. Crespi, J. Robinson, and K. L. K. Jr, Unexpected near-infrared to visible nonlinear optical properties from 2-D polar metals, Nano Lett. 20, 8312 (2020).
  109. H. L. Feng, C.-J. Kang, P. Manuel, F. Orlandi, Y. Su, J. Chen, Y. Tsujimoto, J. Hadermann, G. Kotliar, K. Yamaura, E. E. McCabe, and M. Greenblatt, Antiferromagnetic order breaks inversion symmetry in a metallic double perovskite, Pb2NiOsO6, Chem. Mater. 33, 4188 (2021).
  110. S. Salmani-Rezaie, L. Galletti, T. Schumann, R. Russell, H. Jeong, Y. Li, J. W. Harter, and S. Stemmer, Superconductivity in magnetically doped SrTiO3, Appl. Phys. Lett. 118, 202602 (2021).
  111. H. Jacobsen, H. L. Feng, A. J. Princep, M. C. Rahn, Y. Guo, J. Chen, Y. Matsushita, Y. Tsujimoto, M. Nagao, D. Khalyavin, P. Manuel, C. A. Murray, C. Donnerer, J. G. Vale, M. M. Sala, K. Yamaura, and A. T. Boothroyd, Magnetically induced metal-insulator transition in Pb2CaOsO6, Phys. Rev. B 102, 214409 (2020).
  112. M. Zhu, J. Peng, W. Tian, T. Hong, Z. Q. Mao, and X. Ke, Tuning the competing phases of bilayer ruthenate Ca3Ru2O7 via dilute Mn impurities and magnetic field, Phys. Rev. B 95, 144426 (2017).
  113. S. Lei, S. Chikara, D. Puggioni, J. Peng, M. Zhu, M. Gu, W. Zhao, Y. Wang, Y. Yuan, H. Akamatsu, M. H. W. Chan, X. Ke, Z. Mao, J. M. Rondinelli, M. Jaime, J. Singleton, F. Weickert, V. S. Zapf, and V. Gopalan, Comprehensive magnetic phase diagrams of the polar metal Ca3(Ru0.95Fe0.05)2O7, Phys. Rev. B 99, 224411 (2019).
  114. S. Tsuda, N. Kikugawa, K. Sugii, S. Uji, S. Ueda, M. Nishio, and Y. Maeno, Mott transition extremely sensitive to impurities in Ca3Ru2O7 revealed by hard x-ray photoemission studies, Phys. Rev. B 87, 241107(R) (2013).
  115. D. Puggioni, M. Horio, J. Chang, and J. M. Rondinelli, Cooperative interactions govern the fermiology of the polar metal Ca3Ru2O7, Phys. Rev. Res. 2, 023141 (2020).
  116. X. Ke, J. Peng, W. Tian, T. Hong, M. Zhu, and Z. Q. Mao, Commensurate-incommensurate magnetic phase transition in the Fe-doped bilayer ruthenate Ca3Ru2O7, Phys. Rev. B 89, 220407(R) (2014).
  117. J. Peng, X. M. Gu, G. T. Zhou, W. Wang, J. Y. Liu, Y. Wang, Z. Q. Mao, X. S. Wu, and S. Dong, Electron mass enhancement and magnetic phase separation near the mott transition in double-layer ruthenates, Front. Phys. 13, 137108 (2018).
  118. O. I. Malyi, G. M. Dalpian, X.-G. Zhao, Z. Wang, and A. Zunger, Realization of predicted exotic materials: The burden of proof, Mater. Today 32, 35 (2020).
  119. J. Ma, R. Yang, and H. Chen, A large modulation of electron-phonon coupling and an emergent superconducting dome in doped strong ferroelectrics, Nat. Commun. 12, 2314 (2021).
  120. D. M. Kennes, M. Claassen, L. Xian, A. Georges, A. J. Millis, J. Hone, C. R. Dean, D. N. Basov, A. N. Pasupathy, and A. Rubio, Moiré heterostructures as a condensed-matter quantum simulator, Nat. Phys. 17, 155 (2021).
  121. M. A. Susner, M. Chyasnavichyus, M. A. McGuire, P. Ganesh, and P. Maksymovych, Metal thio- and selenophosphates as multifunctional van der Waals layered materials, Adv. Mater. 29, 1602852 (2017).
  122. K. F. Mak, J. Shan, and D. C. Ralph, Probing and controlling magnetic states in 2D layered magnetic materials, Nat. Rev. Phys. 1, 646 (2019).
  123. C. Gong and X. Zhang, Two-dimensional magnetic crystals and emergent heterostructure devices, Science 363, eaav4450 (2019).
  124. T. Xu, J. Zhang, Y. Zhu, J. Wang, T. Shimada, T. Kitamura, and T.-Y. Zhang, Two-dimensional polar metal of a PbTe monolayer by electrostatic doping, Nanoscale Horizons 5, 1400 (2020).
  125. M. Ye, S. Hu, S. Ke, Y. Zhu, Y. Zhang, L. Xie, Y. Zhang, D. Zhang, Z. Luo, M. Gu, J. He, P. Zhang, W. Zhang, and L. Chen, Observation of a room temperature two-dimensional ferroelectric metal, arXiv:1908.08726.
  126. W. Luo, K. Xu, and H. Xiang, Two-dimensional hyperferroelectric metals: A different route to ferromagnetic-ferroelectric multiferroics, Phys. Rev. B 96, 1235415 (2017).
  127. J. Lu, G. Chen, W. Luo, J. Íñiguez, L. Bellaiche, and H. Xiang, Ferroelectricity with Asymmetric Hysteresis in Metallic LiOsO3 Ultrathin Films, Phys. Rev. Lett. 122, 227601 (2019).
  128. H. L. B. Boström, M. S. Senn, and A. L. Goodwin, Recipes for improper ferroelectricity in molecular perovskites, Nat. Commun. 9, 2380 (2018).
  129. M. L. Aubrey, A. S. Valdes, M. R. Filip, B. A. Connor, K. P. Lindquist, J. B. Neaton, and H. I. Karunadasa, Directed assembly of layered perovskite heterostructures as single crystals, Nature (London) 597, 355 (2021).
  130. H. Kageyama, K. Hayashi, K. Maeda, J. P. Attfield, Z. Hiroi, J. M. Rondinelli, and K. R. Poeppelmeier, Expanding frontiers in materials chemistry and physics with multiple anions, Nat. Commun. 9, 772 (2018).
  131. J. K. Harada, N. Charles, K. R. Poeppelmeier, and J. M. Rondinelli, Heteroanionic materials by design: Progress toward targeted properties, Adv. Mater. 31, 1805295 (2019).
  132. B. Peng, Y. Hu, S. Murakami, T. Zhang, and B. Monserrat, Topological phonons in oxide perovskites controlled by light, Sci. Adv. 6, eabd1618 (2020).
  133. D. Wijethunge, L. Zhang, and A. Du, Prediction of two-dimensional ferroelectric metal Mxenes, J. Mater. Chem. C 9, 11343 (2021).
  134. Q. Yang, M. Wu, and J. Li, Origin of two-dimensional vertical ferroelectricity in WTe2 bilayer and multilayer, J. Phys. Chem. Lett. 9, 7160 (2018).
  135. L. Li and M. Wu, Binary compound bilayer and multilayer with vertical polarizations: Two-dimensional ferroelectrics, multiferroics, and nanogenerators, ACS Nano 11, 6382 (2017).
  136. D. K. Mann, A. M. Díez, J. Xu, O. I. Lebedev, Y. V. Kolen'ko, and M. Shatruk, Polar layered intermetallic LaCo2P2 as a water oxidation electrocatalyst, ACS Appl. Mater. Interfaces 14, 14120 (2022).
  137. D. Puggioni, G. Giovannetti, and J. M. Rondinelli, Polar metals as electrodes to suppress the critical-thickness limit in ferroelectric nanocapacitors, J. Appl. Phys. 124, 174102 (2018).
  138. J. M. Rondinelli and D. Puggioni, Noncentrosymmetric metal electrodes for ferroic device, Patent No. US-20180040711-A, United States (2017), https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20180040711.
  139. X. Liu, Y. Yang, T. Hu, G. Zhao, C. Chen, and W. Ren, Vertical ferroelectric switching by in-plane sliding of two-dimensional bilayer WTe2, Nanoscale 11, 18575 (2019).
  140. M. Moaied, M. M. A. Yajadda, and K. (Ken) Ostrikov, Quantum effects of nonlocal plasmons in epsilon-near-zero properties of a thin gold film slab, Plasmonics 10, 1615 (2015).
  141. S. Raza, T. Christensen, M. Wubs, S. I. Bozhevolnyi, and N. A. Mortensen, Nonlocal response in thin-film waveguides: Loss versus nonlocality and breaking of complementarity, Phys. Rev. B 88, 115401 (2013).
  142. H. Chalabi, D. Schoen, and M. L. Brongersma, Hot-electron photodetection with a plasmonic nanostripe antenna, Nano Lett. 14, 1374 (2014).
  143. B. Hou, L. Shen, H. Shi, R. Kapadia, and S. B. Cronin, Hot electron-driven photocatalytic water splitting, Phys. Chem. Chem. Phys. 19, 2877 (2017).
  144. M. L. Juan, R. Gordon, Y. Pang, F. Eftekhari, and R. Quidant, Self-induced back-action optical trapping of dielectric nanoparticles, Nat. Phys. 5, 915 (2009).
  145. M. L. Juan, M. Righni, and R. Quidant, Plasmon nano-optical tweezers, Nat. Photonics 5, 349 (2011).
  146. J. C. Ndukaife, A. V. Kildishev, A. G. A. Nnanna, V. M. Shalaev, S. T. Wereley, and A. Boltasseva, Long-range and rapid transport of individual nano-objects by a hybrid electrothermoplasmonic nanotweezer, Nat. Nanotechnol. 11, 53 (2016).
  147. D. N. Basov, R. D. Averitt, and D. Hsieh, Towards properties on demand in quantum materials, Nat. Mater. 16, 1077 (2017).
  148. Y. Wang, X. Liu, J. D. Burton, S. S. Jaswal, and E. Y. Tsymbal, Ferroelectric Instability Under Screened Coulomb Interactions, Phys. Rev. Lett. 109, 247601 (2012).
  149. V. F. Michel, T. Esswein, and N. A. Spaldin, Interplay between ferroelectricity and metallicity in BaTiO3, J. Mater. Chem. C 9, 8640 (2021).
  150. J. Serre and A. Ghazali, From band tailing to impurity-band formation and discussion of localization in doped semiconductors: A multiple-scattering approach, Phys. Rev. B 28, 4704 (1983).
  151. A. L. Efros, N. V. Lien, and B. I. Shklovskii, Impurity band structure in lightly doped semiconductors, J. Phys. C: Solid State Phys. 12, 1869 (1979).
  152. E. Pastor, M. Sachs, S. Selim, J. R. Durrant, A. A. Bakulin, and A. Walsh, Electronic defects in metal oxide photocatalysts, Nat. Rev. Mater. 7, 503 (2022).
  153. S. Raghavan, J. Y. Zhang, O. F. Shoron, and S. Stemmer, Probing the metal-insulator transition in BaTiO3 by electrostatic doping, Phys. Rev. Lett. 117, 037602 (2016).
  154. K. Page, T. Kolodiazhnyi, T. Proffen, A. K. Cheetham, and R. Seshadri, Local structural origins of the distinct electronic properties of Nb-substituted SrTiO3 and BaTiO3, Phys. Rev. Lett. 101, 205502 (2008).
  155. A. Walsh and A. Zunger, Instilling defect tolerance in new compounds, Nat. Mater. 16, 964 (2017).
  156. A. Marcelli, M. Coreno, M. Stredansky, W. Xu, C. Zou, L. Fan, W. Chu, S. Wei, A. Cossaro, A. Ricci, A. Bianconi, and A. D'Elia, Nanoscale phase separation and lattice complexity in VO2: The metal–insulator transition investigated by XANES via auger electron yield at the vanadium L23-edge and resonant photoemission, Condens. Matter 2, 38 (2017).
  157. S. Salmani-Rezaie, K. Ahadi, and S. Stemmer, Polar nanodomains in a ferroelectric superconductor, Nano Lett. 20, 6542 (2020).

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Phys. Rev. Materials 7, 010301– Published 9 January, 2023
  • Received 10 October 2022
  • Accepted 22 December 2022
Article part of CHORUS
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