Electronic thermal conductivity in 2D topological insulator in a HgTe quantum well

Abstract

We have measured the differential resistance in a two-dimensional topological insulator (2DTI) in a HgTe quantum well, as a function of the applied dc current. The transport near the charge neutrality point is characterized by a pair of counter propagating gapless edge modes. In the presence of an electric field, the energy is transported by counter propagating channels in the opposite direction. We test a hot carrier effect model and demonstrate that the energy transfer complies with the Wiedemann Franz law near the charge neutrality point in the edge transport regime.

arXiv comment8 pages, 4 figures

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Cited by in corpus (1)

• Microwave Photoresistance of a Two-Dimensional Topological Insulator in a HgTe Quantum Well