Charge ordering in stoichiometric FeTe: Scanning tunneling microscopy and spectroscopy
Wei Li, Wei-Guo Yin, Lili Wang, Ke He, Xucun Ma, Qi-Kun Xue, and Xi Chen
Phys. Rev. B 93, 041101(R) (2016) - Published 4 January, 2016
Topological phases with long-range interactions
Z.-X. Gong, M. F. Maghrebi, A. Hu, M. L. Wall, M. Foss-Feig, and A. V. Gorshkov
Phys. Rev. B 93, 041102(R) (2016) - Published 8 January, 2016
On the unphysical solutions of the Kadanoff-Baym equations in linear response: Correlation-induced homogeneous density-distribution and attractors
Adrian Stan
Phys. Rev. B 93, 041103(R) (2016) - Published 8 January, 2016
In modern quantum many-body physics, the Kadanoff-Baym equations have become a crucial component in the treatment of strongly and weakly correlated systems far from equilibrium. From the one-particle Green function (,), they allow for the calculation of time-dependent expectation values of all one-particle observables and the total energy. In this work, for isolated Coulomb systems, the numerical behavior of the Kadanoff-Baym equations is investigated. The electron density dynamics are damped to an unphysical homogeneous density distribution, across both the linear and nonlinear response regimes. Unphysical features are shown to exist for -derivable self-energy approximations, such as Hartree-Fock, second-Born, or , in Hubbard and Coulomb systems, irrespective of interaction strength. With this degree of universality, these findings are pertinent to all two-time formalisms, and suggest the need for a different approach to the dynamics of quantum systems.
Ferroelectric instability and topological crystalline insulating nature in PbPo
Chang-Jong Kang and B. I. Min
Phys. Rev. B 93, 041104(R) (2016) - Published 13 January, 2016
Microscopic quantum interference in excitonic condensation of
Koudai Sugimoto, Tatsuya Kaneko, and Yukinori Ohta
Phys. Rev. B 93, 041105(R) (2016) - Published 15 January, 2016
Quantum disordered insulating phase in the frustrated cubic-lattice Hubbard model
Manuel Laubach, Darshan G. Joshi, Johannes Reuther, Ronny Thomale, Matthias Vojta, and Stephan Rachel
Phys. Rev. B 93, 041106(R) (2016) - Published 19 January, 2016
Differential conductance and defect states in the heavy-fermion superconductor
John S. Van Dyke, J. C. Séamus Davis, and Dirk K. Morr
Phys. Rev. B 93, 041107(R) (2016) - Published 22 January, 2016
Topological nematic phase in Dirac semimetals
Rui-Xing Zhang, Jimmy A. Hutasoit, Yan Sun, Binghai Yan, Cenke Xu, and Chao-Xing Liu
Phys. Rev. B 93, 041108(R) (2016) - Published 26 January, 2016
Universal signatures of Fermi arcs in quasiparticle interference on the surface of Weyl semimetals
Stefanos Kourtis, Jian Li, Zhijun Wang, Ali Yazdani, and B. Andrei Bernevig
Phys. Rev. B 93, 041109(R) (2016) - Published 26 January, 2016
Fine structure of cyclotron resonance in a two-dimensional electron system
V. M. Muravev, I. V. Andreev, S. I. Gubarev, V. N. Belyanin, and I. V. Kukushkin
Phys. Rev. B 93, 041110(R) (2016) - Published 28 January, 2016
The authors discuss magnetoplasma and cyclotron resonances under microwave excitation in a high quality, GaAs/AlGaAs two-dimensional electron system. They observe that the cyclotron resonance originates as a pure resonance that does not hybridize with dimensional magnetoplasma excitations. The magnetoplasma resonances form a fine structure of the cyclotron resonance.




