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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.

SUBMITTER: Gusev GM

PROVIDER: S-EPMC6351662 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature

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

Gusev G M GM Kvon Z D ZD Levin A D AD Olshanetsky E B EB Raichev O E OE Mikhailov N N NN Dvoretsky S A SA

Scientific reports 20190129 1

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 Wiedem ...[more]

PMID: 30696853

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