Quantized thermal Hall conductance from edge current calculations in lattice models
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.100.155112
Abstract: The quantized thermal Hall effect is an important probe for detecting chiral topological order and revealing the nature of chiral gapless edge states. The standard Kubo formula approach for the thermal Hall conductance $\kappa_{xy}$ based… read more here.
Keywords: hall conductance; thermal hall; quantized thermal; hall ... See more keywords
Universal nonanalytic behavior of the nonequilibrium Hall conductance in Floquet topological insulators
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DOI: 10.1103/physrevb.96.054306
Abstract: We study the Hall conductance in a Floquet topological insulator in the long time limit after sudden switches of the driving amplitude. Based on a high frequency expansion of the effective Hamiltonian and the micromotion… read more here.
Keywords: conductance floquet; floquet topological; conductance; universal nonanalytic ... See more keywords
Magnetic Hofstadter butterfly and its topologically quantized Hall conductance
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.155425
Abstract: The energy spectrum of massless Dirac fermions in graphene under two-dimensional periodic magnetic modulation with square-lattice symmetry is calculated. We show that the translation symmetry of the problem is similar to that of the Hofstadter… read more here.
Keywords: topologically quantized; magnetic hofstadter; hall conductance; quantized hall ... See more keywords
Mechanism for Hall conductance of two-band systems against decoherence.
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review E"
DOI: 10.1103/physreve.95.042129
Abstract: The Kubo formula expresses a linear response of the quantum system to weak classical fields. Previous studies showed that the environment degrades the quantum Hall conductance. By studying the dynamics of dissipative two-band systems, in… read more here.
Keywords: two band; conductance; band systems; hall conductance ... See more keywords
Temperature Enhancement of Thermal Hall Conductance Quantization.
Sign Up to like & getrecommendations! Published in 2020 at "Physical review letters"
DOI: 10.1103/physrevlett.125.236802
Abstract: The quest for non-Abelian quasiparticles has inspired decades of experimental and theoretical efforts, where the scarcity of direct probes poses a key challenge. Among their clearest signatures is a thermal Hall conductance with quantized half-integer… read more here.
Keywords: hall; quantization; thermal hall; temperature enhancement ... See more keywords