Volume 4, Issue 7

July 2020

Browse Issues:

Prev Next

HIGHLIGHTED ARTICLES

EDITORS' SUGGESTION

RAPID COMMUNICATION

Determining the Rashba parameter from the bilinear magnetoresistance response in a two-dimensional electron gas

D. C. Vaz, F. Trier, A. Dyrdał, A. Johansson, K. Garcia, A. Barthélémy, I. Mertig, J. Barnaś, A. Fert, and M. Bibes

Phys. Rev. Materials 4, 071001(R) (2020) - Published 2 July, 2020

The Rashba spin-orbit coupling is a relativistic interaction appearing in systems lacking inversion symmetry such as surfaces or interfaces. It locks the electrons’ spin and angular momentum and enables efficient means to interconvert spin currents and charge currents through the direct and inverse Edelstein effects. The Rashba coefficient sets the amplitude of the Rashba spin-orbit coupling but its quantification, using for instance angle-resolved photoemission spectroscopy, is very challenging. The authors demonstrate that the Rashba coefficient can be reliably extracted from a simple magnetotransport experiment and apply it to LaAlO $_{3}$ /SrTiO $_{3}$ interfaces for a broad range of Fermi energies, tuned by an electrostatic gate.

EDITORS' SUGGESTION

Relationship between grain boundary segregation and grain boundary diffusion in Cu-Ag alloys

R. K. Koju and Y. Mishin

Phys. Rev. Materials 4, 073403 (2020) - Published 15 July, 2020

Segregation of alloy components to grain boundaries (GBs) and the drastically accelerated atomic mobility in GB regions are two phenomena of significant fundamental interest and technological importance. Surprisingly, the relationships between them remain virtually unexplored. In this paper, atomistic simulations are applied to understand the effect of GB segregation on GB diffusion using a Cu-Ag alloy as a model. It is shown that GB segregation can cause acceleration or reduction in GB diffusivity of the alloy components, depending on the amount of segregation, temperature, and alloy composition. The diffusion-segregation interplay can be explained by the site-blocking effect and the GB premelting at high temperatures.

EDITORS' SUGGESTION

Dynamical vortex phase diagram of two-dimensional superconductivity in gated $Mo S_{2}$

Yu Saito, Yuki M. Itahashi, Tsutomu Nojima, and Yoshihiro Iwasa

Phys. Rev. Materials 4, 074003 (2020) - Published 7 July, 2020

2D superconductors exhibit novel aspects which are distinct from those of the 3D counterparts. Vortex matter is one of them. Here, the authors report a dynamical vortex phase diagram at zero magnetic field for ion-gated MoS $_{2}$ . They find that superconductivity is destroyed by current through the dissociation of vortex-antivortex pairs with multiple steps. They are accounted for by the kinematic vortex flow states, including phase slip line formation. Based on the present result, the authors present a comprehensive vortex phase diagram for clean 2D superconductors.

EDITORS' SUGGESTION

Magnetic and electronic properties of spin-orbit coupled Dirac electrons on a $(001)$ thin film of double-perovskite ${Sr}_{2} {FeMoO}_{6}$

Masahiko G. Yamada and George Jackeli

Phys. Rev. Materials 4, 074007 (2020) - Published 21 July, 2020

This paper presents an interacting model for the electronic and magnetic behavior of a strained (001) atomic layer of Sr $_{2}$ FeMoO $_{6}$ . The authors find that the strong spin-orbit coupling in the molybdenum 4 $d$ shell gives rise to a robust ferrimagnetic state with an emergent spin-polarized electronic structure consisting of flat bands and four massive or massless Dirac dispersions. Based on the spin-wave theory, they demonstrate that the magnetic order remains intact for a wide range of doping, leading to the possibility of exploring flat band physics, such as Wigner crystallization.

EDITORS' SUGGESTION

Tuning magnetic order in the van der Waals metal ${Fe}_{5} {GeTe}_{2}$ by cobalt substitution

Andrew F. May, Mao-Hua Du, Valentino R. Cooper, and Michael A. McGuire

Phys. Rev. Materials 4, 074008 (2020) - Published 21 July, 2020

The magnetic van der Waals materials with the highest ordering temperatures are generally metallic ferromagnets, such as Fe $_{5}$ GeTe $_{2}$ with a Curie temperature near 300 K. In this work, the authors have demonstrated an ability to produce an antiferromagnetic state with an enhanced critical temperature by substituting cobalt for iron. While such a change to the magnetism is not uncommon, the important finding here is that the change in magnetic order is coupled not just to the chemical modification but also to a change in layer stacking that is induced by the cobalt substitution.

EDITORS' SUGGESTION

First-principles prediction of two-dimensional copper borides

Xiao-Ji Weng, Xin-Ling He, Jing-Yu Hou, Chun-Mei Hao, Xiao Dong, Guoying Gao, Yongjun Tian, Bo Xu, and Xiang-Feng Zhou

Phys. Rev. Materials 4, 074010 (2020) - Published 23 July, 2020

Ordered borides of group IB and IIB metals (Cu, Ag, Au, Zn, Cd, Hg), as the well-known immiscible materials, are practically unknown due to the small electronegativity difference and large mismatch in their atomic sizes. Nevertheless, such rule may be broken under extreme conditions, i.e., high pressure or low dimensionality. Here two-dimensional (2D) copper borides were predicted from ab initio evolutionary searches, identifying that two structures are metallic whereas another one is strikingly a nodal line semimetal. These results challenge the long lasting puzzle in the immiscible systems and add new members to the 2D materials.

EDITORS' SUGGESTION

Spin dynamics and a nearly continuous magnetic phase transition in an entropy-stabilized oxide antiferromagnet

Benjamin A. Frandsen, K. Alec Petersen, Nicolas A. Ducharme, Alexander G. Shaw, Ethan J. Gibson, Barry Winn, Jiaqiang Yan, Junjie Zhang, Michael E. Manley, and Raphaël P. Hermann

Phys. Rev. Materials 4, 074405 (2020) - Published 9 July, 2020

Studying magnetism in entropy-stabilized oxides (ESOs) is an exciting new research avenue following the recent discovery of antiferromagnetic order in (Mg $_{0.2}$ Co $_{0.2}$ Ni $_{0.2}$ Cu $_{0.2}$ Zn $_{0.2}$ )O (MgO-ESO). Muon spin relaxation and neutron scattering experiments reveal a continuous transition that occurs across a broad distribution of antiferromagnetic ordering temperatures throughout the MgO-ESO sample. The ground state exhibits a magnon gap and significant quasielastic neutron scattering, suggesting unusual intrinsic magnetic fluctuations. These results resolve several open questions about magnetic order in MgO-ESO and pave the way for future investigations of magnetic ESOs.

EDITORS' SUGGESTION

Correlating dynamic microstructure to observed color in electrophoretic displays via in situ small-angle x-ray scattering

Scott C. Bukosky, Joshua A. Hammons, Brian Giera, Elaine Lee, Jinkyu Han, Megan C. Freyman, Anna Ivanovskaya, Kerry G. Krauter, Joshua D. Kuntz, Marcus A. Worsley, T. Yong-Jin Han, William D. Ristenpart, and Andrew J. Pascall

Phys. Rev. Materials 4, 075802 (2020) - Published 27 July, 2020

Electronic displays are nearly ubiquitous in modern society. With the drive to lower power consumption, reflective displays based on reversible electrophoretic deposition of nanoparticles have emerged as a candidate next generation display technology. Understanding the origins of color in these displays is challenging because the color is determined by the transient arrangement of particles in the electric field. In this article, a new technique, based on small angle x-ray scattering, is developed to simultaneously interrogate nanoparticle arrangement and measure color while the display is in operation. Furthermore, a particle-based numerical model of electrophoretic deposition is demonstrated to quantitatively predict transient interparticle distances during operation.

RAPID COMMUNICATIONS

Structural and mechanical properties

RAPID COMMUNICATION

Twinning path determined by broken symmetry: A revisit to deformation twinning in hexagonal close-packed titanium and zirconium

Yipeng Gao, Jia-Hong Ke, Bo Mao, Yiliang Liao, Yufeng Zheng, and Larry K. Aagesen

Phys. Rev. Materials 4, 070601(R) (2020) - Published 6 July, 2020

Two-dimensional materials

EDITORS' SUGGESTION

RAPID COMMUNICATION

Determining the Rashba parameter from the bilinear magnetoresistance response in a two-dimensional electron gas

D. C. Vaz, F. Trier, A. Dyrdał, A. Johansson, K. Garcia, A. Barthélémy, I. Mertig, J. Barnaś, A. Fert, and M. Bibes

Phys. Rev. Materials 4, 071001(R) (2020) - Published 2 July, 2020

Superconducting materials

RAPID COMMUNICATION

RSAVS superconductors: Materials with a superconducting state that is robust against large volume shrinkage

Cheng Huang, Jing Guo, Jianfeng Zhang, Karoline Stolze, Shu Cai, Kai Liu, Hongming Weng, Zhongyi Lu, Qi Wu, Tao Xiang, Robert J. Cava, and Liling Sun

Phys. Rev. Materials 4, 071801(R) (2020) - Published 20 July, 2020

ARTICLES

Crystal growth, crystallization, and kinetics

Semi-adsorption-controlled growth window for half-Heusler FeVSb epitaxial films

Estiaque H. Shourov, Ryan Jacobs, Wyatt A. Behn, Zachary J. Krebs, Chenyu Zhang, Patrick J. Strohbeen, Dongxue Du, Paul M. Voyles, Victor W. Brar, Dane D. Morgan, and Jason K. Kawasaki

Phys. Rev. Materials 4, 073401 (2020) - Published 1 July, 2020

Vacancy-engineering-induced dislocation inclination in III-nitrides on Si substrates

Jie Zhang, Xuelin Yang, Yuxia Feng, Yue Li, Maojun Wang, Jianfei Shen, Lai Wei, Danshuo Liu, Shan Wu, Zidong Cai, Fujun Xu, Xinqiang Wang, Weikun Ge, and Bo Shen

Phys. Rev. Materials 4, 073402 (2020) - Published 13 July, 2020

EDITORS' SUGGESTION

Relationship between grain boundary segregation and grain boundary diffusion in Cu-Ag alloys

R. K. Koju and Y. Mishin

Phys. Rev. Materials 4, 073403 (2020) - Published 15 July, 2020

Influence of strain on the indium incorporation in (0001) GaN

T. Schulz, L. Lymperakis, M. Anikeeva, M. Siekacz, P. Wolny, T. Markurt, and M. Albrecht

Phys. Rev. Materials 4, 073404 (2020) - Published 24 July, 2020

Unexpected behavior of the crystal growth velocity at the hypercooling limit

P. Fopp, M. Kolbe, F. Kargl, R. Kobold, and W. Hornfeck

Phys. Rev. Materials 4, 073405 (2020) - Published 27 July, 2020

Structural and mechanical properties

Comprehensive analysis of the influence of dispersion on group-14 rutile-type solids

Ángel Morales-García and Francesc Illas

Phys. Rev. Materials 4, 073601 (2020) - Published 2 July, 2020

First-principles calculations of group IIA and group IV impurities in $α − A l_{2} O_{3}$

Toshihiro Futazuka, Ryo Ishikawa, Naoya Shibata, and Yuichi Ikuhara

Phys. Rev. Materials 4, 073602 (2020) - Published 6 July, 2020

Full characterization of ultrathin 5-nm low- $k$ dielectric bilayers: Influence of dopants and surfaces on the mechanical properties

Travis D. Frazer, Joshua L. Knobloch, Jorge N. Hernández-Charpak, Kathleen M. Hoogeboom-Pot, Damiano Nardi, Sadegh Yazdi, Weilun Chao, Erik H. Anderson, Marie K. Tripp, Sean W. King, Henry C. Kapteyn, Margaret M. Murnane, and Begoña Abad

Phys. Rev. Materials 4, 073603 (2020) - Published 13 July, 2020

Atomic processes of shear-coupled migration in ${112}$ twins and vicinal grain boundaries in bcc-Fe

N. Kvashin, P. L. García-Müller, N. Anento, and A. Serra

Phys. Rev. Materials 4, 073604 (2020) - Published 15 July, 2020

Development of new methods for materials

Equilibrium solute segregation to matrix- $θ^{'}$ precipitate interfaces in Al-Cu alloys from first principles

G. D. Samolyuk, M. Eisenbach, D. Shin, Y. N. Osetsky, A. Shyam, and J. R. Morris

Phys. Rev. Materials 4, 073801 (2020) - Published 6 July, 2020

Comparative study of Minnesota functionals performance on ferroelectric ${BaTiO}_{3}$ and ${PbTiO}_{3}$

Maggie Kingsland, K. A. Lynch, S. Lisenkov, Xiao He, and I. Ponomareva

Phys. Rev. Materials 4, 073802 (2020) - Published 30 July, 2020

Two-dimensional materials

Ferromagnetism and half-metallicity in two-dimensional $M O (M = Ga, In)$ monolayers induced by hole doping

Ruishen Meng, Michel Houssa, Konstantina Iordanidou, Geoffrey Pourtois, Valeri Afanasiev, and André Stesmans

Phys. Rev. Materials 4, 074001 (2020) - Published 6 July, 2020

Structural, electronic, and magnetic properties of vanadium-based Janus dichalcogenide monolayers: A first-principles study

Dibyendu Dey and Antia S. Botana

Phys. Rev. Materials 4, 074002 (2020) - Published 6 July, 2020

EDITORS' SUGGESTION

Dynamical vortex phase diagram of two-dimensional superconductivity in gated $Mo S_{2}$

Yu Saito, Yuki M. Itahashi, Tsutomu Nojima, and Yoshihiro Iwasa

Phys. Rev. Materials 4, 074003 (2020) - Published 7 July, 2020

Precise determination of moiré pattern in monolayer FeO(111) films on Au(111) by scanning tunneling microscopy

Shuo Yang, Jian Gou, Peng Cheng, Lan Chen, and Kehui Wu

Phys. Rev. Materials 4, 074004 (2020) - Published 8 July, 2020

Tuning hydrogen adsorption and electronic properties from graphene to fluorographone

Gabriel R. Schleder, Enesio Marinho, Jr., Douglas J. R. Baquiao, Yuri M. Celaschi, Felipe Gollino, Gustavo M. Dalpian, and Pedro A. S. Autreto

Phys. Rev. Materials 4, 074005 (2020) - Published 13 July, 2020

Simultaneous generation of direct- and indirect-gap photoluminescence in multilayer ${MoS}_{2}$ bubbles

Hailan Luo, Xuanyi Li, Yanchong Zhao, Rong Yang, Lihong Bao, Yufeng Hao, Yu-nan Gao, Norman N. Shi, Yang Guo, Guodong Liu, Lin Zhao, Qingyan Wang, Zhongshan Zhang, Guangyu Zhang, Jiatao Sun, Yuan Huang, Hongjun Gao, and Xingjiang Zhou

Phys. Rev. Materials 4, 074006 (2020) - Published 20 July, 2020

EDITORS' SUGGESTION

Magnetic and electronic properties of spin-orbit coupled Dirac electrons on a $(001)$ thin film of double-perovskite ${Sr}_{2} {FeMoO}_{6}$

Masahiko G. Yamada and George Jackeli

Phys. Rev. Materials 4, 074007 (2020) - Published 21 July, 2020

EDITORS' SUGGESTION

Tuning magnetic order in the van der Waals metal ${Fe}_{5} {GeTe}_{2}$ by cobalt substitution

Andrew F. May, Mao-Hua Du, Valentino R. Cooper, and Michael A. McGuire

Phys. Rev. Materials 4, 074008 (2020) - Published 21 July, 2020

Spatially indirect excitons in black and blue phosphorene double layers

Michele Re Fiorentin, Giancarlo Cicero, and Maurizia Palummo

Phys. Rev. Materials 4, 074009 (2020) - Published 22 July, 2020

EDITORS' SUGGESTION

First-principles prediction of two-dimensional copper borides

Xiao-Ji Weng, Xin-Ling He, Jing-Yu Hou, Chun-Mei Hao, Xiao Dong, Guoying Gao, Yongjun Tian, Bo Xu, and Xiang-Feng Zhou

Phys. Rev. Materials 4, 074010 (2020) - Published 23 July, 2020

Plasmonics in argentene

Ravishankar Sundararaman, Thomas Christensen, Yuan Ping, Nicholas Rivera, John D. Joannopoulos, Marin Soljačić, and Prineha Narang

Phys. Rev. Materials 4, 074011 (2020) - Published 24 July, 2020

Alloy engineered germanium monochalcogenide with tunable bandgap for broadband optoelectrical applications

Sizhao Liu, Qingwei Ma, Changqing Lin, Chengyun Hong, Ruixuan Yi, Rong Wang, Ruiping Li, Xiaolong Liu, Anmin Nie, Xuetao Gan, Yingchun Cheng, and Wei Huang

Phys. Rev. Materials 4, 074012 (2020) - Published 29 July, 2020

Magnetic, ferroelectric, and multiferroic materials

Structural, magnetic, transport, and thermoelectric properties of the pseudobrookite ${AlTi}_{2} O_{5} − {Ti}_{3} O_{5}$ system

Ryusei Takahama, Toi Ishii, Daigo Indo, Mitsutoshi Arizono, Chieko Terakura, Yoshinori Tokura, Nao Takeshita, Masaaki Noda, Hideki Kuwahara, Takuo Saiki, Takuro Katsufuji, Ryoichi Kajimoto, and Tetsuji Okuda

Phys. Rev. Materials 4, 074401 (2020) - Published 6 July, 2020

Tailoring THz antiferromagnetic resonance of NiO by cation substitution

Takahiro Moriyama, Kensuke Hayashi, Keisuke Yamada, Mutsuhiro Shima, Yutaka Ohya, and Teruo Ono

Phys. Rev. Materials 4, 074402 (2020) - Published 7 July, 2020

Anisotropy-induced spin reorientation in chemically modulated amorphous ferrimagnetic films

E. Kirk, C. Bull, S. Finizio, H. Sepehri-Amin, S. Wintz, A. K. Suszka, N. S. Bingham, P. Warnicke, K. Hono, P. W. Nutter, J. Raabe, G. Hrkac, T. Thomson, and L. J. Heyderman

Phys. Rev. Materials 4, 074403 (2020) - Published 7 July, 2020

Avoided quantum criticality and cluster-glass formation in itinerant ferromagnet ${Sr}_{1 - x} {({La}_{0.5} K_{0.5})}_{x} {RuO}_{3}$

Ryoya Iwahara, Ryoma Sugawara, Rahmanto, Yutoku Honma, Kensuke Matsuoka, Akira Matsuo, Koichi Kindo, Kenichi Tenya, and Makoto Yokoyama

Phys. Rev. Materials 4, 074404 (2020) - Published 8 July, 2020

EDITORS' SUGGESTION

Spin dynamics and a nearly continuous magnetic phase transition in an entropy-stabilized oxide antiferromagnet

Benjamin A. Frandsen, K. Alec Petersen, Nicolas A. Ducharme, Alexander G. Shaw, Ethan J. Gibson, Barry Winn, Jiaqiang Yan, Junjie Zhang, Michael E. Manley, and Raphaël P. Hermann

Phys. Rev. Materials 4, 074405 (2020) - Published 9 July, 2020

Effect of site disorder on the electronic, magnetic, and ferroelectric properties of gallium ferrite

A. Dixit, D. Stoeffler, and M. Alouani

Phys. Rev. Materials 4, 074406 (2020) - Published 13 July, 2020

Hybrid improper ferroelectricity and pressure-induced enhancement of polarization in $B a_{3} C e_{2} O_{7}$ predicted by a first-principles calculation

Bu Hang Chen, Xiao Qiang Liu, and Xiang Ming Chen

Phys. Rev. Materials 4, 074407 (2020) - Published 14 July, 2020

Strongly correlated electron behavior in a new member of the ${A_{n}}_{+ 1} B_{n} X_{3 n + 1}$ homologous series: ${Ce}_{7} {Co}_{6} {Ge}_{19}$

Ashley Weiland, Kaya Wei, Gregory T. McCandless, Justin B. Felder, Lucas J. Eddy, Ryan E. Baumbach, and Julia Y. Chan

Phys. Rev. Materials 4, 074408 (2020) - Published 16 July, 2020

Oxide at the Al-rich ${Fe}_{0.85} {Al}_{0.15} (110)$ surface

Zongbei Dai, Natalia Alyabyeva, Maxime Van den Bossche, Patrizia Borghetti, Stéphane Chenot, Pascal David, Alexey Koltsov, Gilles Renaud, Jacques Jupille, Gregory Cabailh, Claudine Noguera, Jacek Goniakowski, and Rémi Lazzari

Phys. Rev. Materials 4, 074409 (2020) - Published 17 July, 2020

Enhanced piezoelectricity in twinned ferroelastics with nanocavities

Guangming Lu, Suzhi Li, Xiangdong Ding, Jun Sun, and Ekhard K. H. Salje

Phys. Rev. Materials 4, 074410 (2020) - Published 17 July, 2020

Fluorine intercalated graphene: Formation of a two-dimensional spin lattice through pseudoatomization

Shashi B. Mishra, Satyesh K. Yadav, D. G. Kanhere, and B. R. K. Nanda

Phys. Rev. Materials 4, 074411 (2020) - Published 20 July, 2020

Reentrant spin glass state induced by structural phase transition in $L a_{0.4} C e_{0.6} C o_{2} P_{2}$

Judith K. Clark, Xiaoyan Tan, V. Ovidiu Garlea, Alexandra A. Arico, Arthur P. Ramirez, Vincent Yannello, Corey M. Thompson, Kirill Kovnir, and Michael Shatruk

Phys. Rev. Materials 4, 074412 (2020) - Published 22 July, 2020

Semiconducting materials

Trap-state suppression and band-like transport in bilayer-type organic semiconductor ultrathin single crystals

Takamasa Hamai, Satoru Inoue, Shunto Arai, and Tatsuo Hasegawa

Phys. Rev. Materials 4, 074601 (2020) - Published 2 July, 2020

Sn $5 s^{2}$ lone pairs and the electronic structure of tin sulphides: A photoreflectance, high-energy photoemission, and theoretical investigation

Leanne A. H. Jones, Wojciech M. Linhart, Nicole Fleck, Jack E. N. Swallow, Philip A. E. Murgatroyd, Huw Shiel, Thomas J. Featherstone, Matthew J. Smiles, Pardeep K. Thakur, Tien-Lin Lee, Laurence J. Hardwick, Jonathan Alaria, Frank Jäckel, Robert Kudrawiec, Lee A. Burton, Aron Walsh, Jonathan M. Skelton, Tim D. Veal, and Vin R. Dhanak

Phys. Rev. Materials 4, 074602 (2020) - Published 2 July, 2020