Dipolar Weyl semimetals
Alexander C. Tyner and Shouvik Sur
Phys. Rev. B 109, L081101 (2024) - Published 2 February, 2024
Terahertz field driven giant nonlinear phonon response in ferroelectric semiconductor In-doped (Sn,Pb)Te
H. Handa, Y. Okamura, R. Yoshimi, A. Tsukazaki, K. S. Takahashi, Y. Tokura, and Y. Takahashi
Phys. Rev. B 109, L081102 (2024) - Published 2 February, 2024
Recent advances in high-field terahertz technologies can unveil the nonlinear response of elementary excitations. This work finds large-amplitude coherent phonon dynamics in the fully anharmonic regime by intense terahertz excitation of the ferroelectric semiconductor In-doped (Sn,Pb)Te. The high-field resonant drive of soft phonons induces the dramatic shift of transient phonon frequency near the ferroelectric transition point. This highly nonlinear terahertz response quantitatively reveals a phonon potential dominated by strong anharmonicity and temporal lattice dynamics with giant atomic displacement.
Landau quantization near generalized Van Hove singularities: Magnetic breakdown and orbit networks
V. A. Zakharov, A. Mert Bozkurt, A. R. Akhmerov, and D. O. Oriekhov
Phys. Rev. B 109, L081103 (2024) - Published 5 February, 2024
Several of the recently discovered 2D layered quantum materials host higher-order Van Hove singularities near the charge neutrality point. The authors develop here a universal description for magnetic breakdown near different types of higher-order Van Hove singularities. The observation of such a magnetic breakdown via measurement of quantum oscillations or longitudinal bulk conductance in a quantum Hall bar allows for reconstruction of a Fermi surface and classification of the corresponding saddle point in dispersion.
Photoinduced dynamics of flat bands in the kagome metal CoSn
D. Puntel, W. Bronsch, M. Tuniz, M. Kang, P. M. Neves, S. Fang, E. Kaxiras, J. G. Checkelsky, R. Comin, F. Parmigiani, and F. Cilento
Phys. Rev. B 109, L081104 (2024) - Published 8 February, 2024
Flat bands promoted by Hund's rule coupling in the candidate double-layer high-temperature superconductor under high pressure
Yingying Cao and Yi-feng Yang
Phys. Rev. B 109, L081105 (2024) - Published 8 February, 2024
This work describes systematic strongly correlated electronic structure calculations for the candidate double-layer high-temperature superconductor LaNiO under pressure. These reveal the localized-itinerant duality of Ni electrons, flat and quasiparticle bands, and strong interlayer antiferromagnetic correlations due to the interplay of orbital-selective Mott, Hund, and Kondo physics. These results imply a two-component theory with possibly preformed interlayer pairing for the high-temperature superconductivity in pressurized LaNiO. The strange metallicity in the normal state is also explained from the quasiparticle lifetimes.
Ubiquitous nematic Dirac semimetal emerging from interacting quadratic band touching systems
Hongyu Lu, Kai Sun, Zi Yang Meng, and Bin-Bin Chen
Phys. Rev. B 109, L081106 (2024) - Published 12 February, 2024
Chiral spin liquids with projected Gaussian fermionic entangled pair states
Sen Niu, Jheng-Wei Li, Ji-Yao Chen, and Didier Poilblanc
Phys. Rev. B 109, L081107 (2024) - Published 12 February, 2024
Constraints of internal symmetry on the non-Hermitian skin effect and bidirectional skin effect under the action of the Hermitian conjugate of time-reversal symmetry
Shu-Xuan Wang
Phys. Rev. B 109, L081108 (2024) - Published 14 February, 2024
Interband scattering- and nematicity-induced quantum oscillation frequency in FeSe
Valentin Leeb and Johannes Knolle
Phys. Rev. B 109, L081109 (2024) - Published 20 February, 2024
Pseudospin polarization of composite fermions under uniaxial strain
Shuai Yuan, Jiaojie Yan, Ke Huang, Zhimou Chen, Haoran Fan, L. N. Pfeiffer, K. W. West, Yang Liu, and Xi Lin
Phys. Rev. B 109, L081110 (2024) - Published 20 February, 2024
Quasiuniversality from all-in–all-out Weyl quantum criticality in pyrochlore iridates
David J. Moser and Lukas Janssen
Phys. Rev. B 109, L081111 (2024) - Published 20 February, 2024
Dynamical breaking of electron-hole symmetry in nonequilibrium chiral quantum channels
Felix Puster, Stefan G. Fischer, and Bernd Rosenow
Phys. Rev. B 109, L081112 (2024) - Published 22 February, 2024
Oscillatory Hall effect from magnetoelectronic coupling in flexoelectronic silicon
Paul C. Lou, Ravindra G. Bhardwaj, Anand Katailiha, W. P. Beyermann, and Sandeep Kumar
Phys. Rev. B 109, L081113 (2024) - Published 23 February, 2024
Quantum criticality and entanglement for the two-dimensional long-range Heisenberg bilayer
Menghan Song, Jiarui Zhao, Yang Qi, Junchen Rong, and Zi Yang Meng
Phys. Rev. B 109, L081114 (2024) - Published 26 February, 2024
The authors conduct here a pioneering and unbiased investigation into the entanglement properties of (2+1)-dimensional O(3) quantum critical points and two-dimensional Néel states in systems with long-range interactions. This study uncovers exotic properties, such as the vanishing of logarithmic corrections to entanglement entropies at QCPs and an enhancement in Néel states as long-range interactions amplify. Moreover, they determine precise critical exponents of QCPs influenced by long-range interactions, characterized by three distinct renormalization group fixed points.
Simple predictors of in superconducting cuprates and the role of interactions between effective Wannier orbitals in the three-band model
Jakša Vučičević and Michel Ferrero
Phys. Rev. B 109, L081115 (2024) - Published 26 February, 2024
Hubbard model on a triangular lattice: The role of charge fluctuations
Ji-Si Xu, Zheng Zhu, Kai Wu, and Zheng-Yu Weng
Phys. Rev. B 109, L081116 (2024) - Published 27 February, 2024
Ergodic inclusions in many-body localized systems
Luis Colmenarez, David J. Luitz, and Wojciech De Roeck
Phys. Rev. B 109, L081117 (2024) - Published 28 February, 2024











