Long-range Coulomb interaction effects on the topological phase transitions between semimetals and insulators
SangEun Han and Eun-Gook Moon
Phys. Rev. B 97, 241101(R) (2018) - Published 4 June, 2018
Coexistence of tunable Weyl points and topological nodal lines in ternary transition-metal telluride
Xiaoqing Zhou, Qihang Liu, QuanSheng Wu, Tom Nummy, Haoxiang Li, Justin Griffith, Stephen Parham, Justin Waugh, Eve Emmanouilidou, Bing Shen, Oleg V. Yazyev, Ni Ni, and Daniel Dessau
Phys. Rev. B 97, 241102(R) (2018) - Published 8 June, 2018
Topological quantum pump in serpentine-shaped semiconducting narrow channels
Sudhakar Pandey, Niccoló Scopigno, Paola Gentile, Mario Cuoco, and Carmine Ortix
Phys. Rev. B 97, 241103(R) (2018) - Published 11 June, 2018
Proximity-induced topological phases in bilayer graphene
Abdulrhman M. Alsharari, Mahmoud M. Asmar, and Sergio E. Ulloa
Phys. Rev. B 97, 241104(R) (2018) - Published 14 June, 2018
Finite-temperature behavior in the second Landau level of the two-dimensional electron gas
V. Shingla, E. Kleinbaum, A. Kumar, L. N. Pfeiffer, K. W. West, and G. A. Csáthy
Phys. Rev. B 97, 241105(R) (2018) - Published 14 June, 2018
Higher-dimensional Sachdev-Ye-Kitaev non-Fermi liquids at Lifshitz transitions
Arijit Haldar, Sumilan Banerjee, and Vijay B. Shenoy
Phys. Rev. B 97, 241106(R) (2018) - Published 14 June, 2018
Some of the most interesting phenomena in condensed matter occur in high-temperature superconductors and heavy fermions, and arise from a parent non-Fermi-liquid background. Although the non-Fermi-liquid phase has metallic character, it is very different from typical metals in that the electronic excitations are not particlelike (no quasiparticles), and this has lead to these phases eluding a clear theoretical description. Here, the authors develop a model that provides a route to describe non-Fermi liquids realized in condensed matter systems. Building on the zero-dimensional Sachdev-Ye-Kitaev model that is inspired by connections between a non-Fermi liquid and black holes, the authors construct a model in a lattice system where the bands touch to give a divergent density of states (Lifshitz point). The resulting non-Fermi-liquid phases exhibit intriguing properties such as scaling symmetry, nontrivial power-law dependence of entropy on temperature, and fast information scrambling with rate linear in temperature, as well as dynamical transitions to more conventional phases with well-defined quasiparticles.
Importance of orbital fluctuations for the magnetic dynamics in the heavy-fermion compound
Christopher N. Singh and Wei-Cheng Lee
Phys. Rev. B 97, 241107(R) (2018) - Published 14 June, 2018
Pressure-induced dimerization and valence bond crystal formation in the Kitaev-Heisenberg magnet
G. Bastien, G. Garbarino, R. Yadav, F. J. Martinez-Casado, R. Beltrán Rodríguez, Q. Stahl, M. Kusch, S. P. Limandri, R. Ray, P. Lampen-Kelley, D. G. Mandrus, S. E. Nagler, M. Roslova, A. Isaeva, T. Doert, L. Hozoi, A. U. B. Wolter, B. Büchner, J. Geck, and J. van den Brink
Phys. Rev. B 97, 241108(R) (2018) - Published 15 June, 2018
Correlation beyond the random phase approximation: A consistent many-body perturbation theory approach
Friedhelm Bechstedt
Phys. Rev. B 97, 241109(R) (2018) - Published 15 June, 2018
Robust non-Abelian spin liquid and a possible intermediate phase in the antiferromagnetic Kitaev model with magnetic field
Zheng Zhu, Itamar Kimchi, D. N. Sheng, and Liang Fu
Phys. Rev. B 97, 241110(R) (2018) - Published 15 June, 2018
Nodal line fermions in magnetic oxides
R. Wang, J. Z. Zhao, Y. J. Jin, Y. P. Du, Y. X. Zhao, H. Xu, and S. Y. Tong
Phys. Rev. B 97, 241111(R) (2018) - Published 18 June, 2018
Effect of electron correlations on spin excitation bandwidth in as seen via time-of-flight inelastic neutron scattering
Naoki Murai, Katsuhiro Suzuki, Shin-ichiro Ideta, Masamichi Nakajima, Kiyohisa Tanaka, Hiroaki Ikeda, and Ryoichi Kajimoto
Phys. Rev. B 97, 241112(R) (2018) - Published 18 June, 2018
Exact solutions for two-dimensional topological superconductors: Hubbard interaction induced spontaneous symmetry breaking
Motohiko Ezawa
Phys. Rev. B 97, 241113(R) (2018) - Published 19 June, 2018
Dimensionality of excitons in stacked van der Waals materials: The example of hexagonal boron nitride
Wahib Aggoune, Caterina Cocchi, Dmitrii Nabok, Karim Rezouali, Mohamed Akli Belkhir, and Claudia Draxl
Phys. Rev. B 97, 241114(R) (2018) - Published 22 June, 2018
Attractive Coulomb interactions in a triple quantum dot
Changki Hong, Gwangsu Yoo, Jinhong Park, Min-Kyun Cho, Yunchul Chung, H.-S. Sim, Dohun Kim, Hyungkook Choi, Vladimir Umansky, and Diana Mahalu
Phys. Rev. B 97, 241115(R) (2018) - Published 22 June, 2018
This work demonstrates that electron pairing can be achieved purely by the Coulomb interactions in a triple quantum dot. Such a pairing mechanism is different from that of a Cooper pair. The electron pairing in two dots of the triple dot is mediated by the other (third) dot, when the third dot strongly couples with the two via Coulomb repulsion. By measuring electron conductance through each individual dot, the authors find the degeneracy for the pairing, the condition for the degeneracy, and nontrivial transport behavior by the pairing. These findings may be exploited to design quantum devices with nontrivial electron correlations and functionalities.
Stability of a topological insulator: Interactions, disorder, and parity of Kramers doublets
V. Kagalovsky, A. L. Chudnovskiy, and I. V. Yurkevich
Phys. Rev. B 97, 241116(R) (2018) - Published 25 June, 2018
Ramsey fringes in a room-temperature quantum-dot semiconductor optical amplifier
I. Khanonkin, A. K. Mishra, O. Karni, S. Banyoudeh, F. Schnabel, V. Sichkovskyi, V. Mikhelashvili, J. P. Reithmaier, and G. Eisenstein
Phys. Rev. B 97, 241117(R) (2018) - Published 26 June, 2018
Ramsey interference that enables careful control over quantum states is demonstrated here in an inhomogeneously broadened ensemble of quantum dots, which serve as the gain medium of a semiconductor waveguide operating at room temperature. A subfemtosecond-resolution pump-probe scheme reveals a clear oscillatory behavior of the amplitude and instantaneous frequency of the probe pulse. A unique phenomenon is also observed, whereby the temporal position of the output probe pulse also oscillates with the same periodicity. The latter cannot be observed in single-dot systems since it results from the distributed nature of the amplifier.
Photogalvanic effect in Weyl semimetals from first principles
Yang Zhang, Hiroaki Ishizuka, Jeroen van den Brink, Claudia Felser, Binghai Yan, and Naoto Nagaosa
Phys. Rev. B 97, 241118(R) (2018) - Published 29 June, 2018












