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arXiv · 1502.04919

Magnetotransport in disordered two-dimensional topological insulators: signatures of charge puddles

Sven Essert·Klaus Richter
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Abstract

In this numerical study we investigate the influence and interplay of disorder, spin-orbit coupling and magnetic field on the edge-transport in HgTe/CdTe quantum wells in the framework of coherent elastic scattering. We show that the edge states remain unaffected by the combined effect of moderate disorder and a weak magnetic field at realistic spin-orbit coupling strengths. Agreement with the experimentally observed linear magnetic field dependence for the conductance of long samples is obtained when considering the existence of charge puddles.

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Sven Essert, Klaus Richter. 2015-02-17. Magnetotransport in disordered two-dimensional topological insulators: signatures of charge puddles. https://doi.org/10.1088/2053-1583%2F2%2F2%2F024005

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