Thermal dissipation in the quantum Hall regime in graphene
arXiv:2106.13605 · doi:10.1103/PhysRevB.104.115411
Abstract
It is widely accepted that both backscattering and dissipation cannot occur in topological systems because of the topological protection. Here we show that the thermal dissipation can occur in the quantum Hall (QH) regime in graphene in the presence of dissipation sources, although the Hall plateaus and the zero longitudinal resistance still survive. Dissipation appears along the downstream chiral flow direction of the constriction in the Hall plateau regime, but it occurs mainly in the bulk in the Hall plateau transition regime. In addition, dissipation processes are accompanied with the evolution of the energy distribution from non-equilibrium to equilibrium. This indicates that topology neither prohibits the appearance of dissipation nor prohibits entropy increasing, which opens a new topic on the dissipation in topological systems.
10 pages, 9 figures
References in corpus (13)
- The electronic properties of graphene
- Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
- Non-Abelian Anyons and Topological Quantum Computation
- Room-Temperature Quantum Hall Effect in Graphene
- Unconventional Integer Quantum Hall effect in graphene
- Andreev reflection and Klein tunneling in graphene
- Disorder-induced enhancement of transport through graphene p-n junctions
- Quantum Hall Effect of Dirac Fermions in Graphene: Disorder Effect and Phase Diagram
- Charge accumulation at the boundaries of a graphene strip induced by a gate voltage: Electrostatic approach
- Imaging resonant dissipation from individual atomic defects in graphene
- Influence of dephasing process on the quantum Hall effect and the spin Hall effect
- Disorder Effects in the Quantum Hall Effect of Graphene p-n Junctions
- Demonstration of Dissipative Quasihelical Edge Transport in Quantum Anomalous Hall Insulators
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- Dissipation and dephasing in quantum Hall interferometers
- Absence of edge states at armchair edges in inhomogeneously strained graphene under a pseudomagnetic field
- Wavefront dislocations in graphene systems revealed by transport measurement
- Going beyond Landauer scattering theory to describe spatially-resolved non-local heating and cooling in quantum thermoelectrics
- Thermal dissipation of the quantum spin Hall edge states in HgTe/CdTe quantum well
- Quantum anomalous Hall effect in chiral semimetals