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cond-mat.mes-hall2024★ 7 cited
Dissipation and dephasing in quantum Hall interferometers
Peng-Yi Liu, Qing-Feng Sun
In recent years, counter-intuitive results have shown that the quantum Hall edge states with topological protection can be dissipative. In this paper, we point out that the non-equ…
cond-mat.mes-hall2024★ 9 cited
Four-terminal graphene-superconductor thermal switch controlled by the superconducting phase difference
Peng-Yi Liu, Yue Mao, Qing-Feng Sun
We propose a superconducting phase-controlled thermal switch based on a four-terminal graphene-superconductor system. By the coupling of two superconducting leads on a zigzag graph…
cond-mat.mes-hall2024
Classification of Chern Numbers Based on High-Symmetry Points
Yu-Hao Wan, Peng-Yi Liu, Qing-Feng Sun
The Chern number is a crucial topological invariant for distinguishing the phases of Chern insulators. Here we find that for Chern insulators with inversion symmetry, the Chern num…