Non-Equilibrium Transport Through a Gate-Controlled Barrier on the Quantum Spin Hall Edge
Strongly Correlated Electrons
2013-01-14 v1 Mesoscale and Nanoscale Physics
Abstract
The Quantum Spin Hall insulator is characterized by the presence of gapless helical edge states where the spin of the charge carriers is locked to their direction of motion. In order to probe the properties of the edge modes, we propose a design of a tunable quantum impurity realized by a local gate under an external magnetic field. Using the integrability of the impurity model, the conductance is computed for arbitrary interactions, temperatures and voltages, including the effect of Fermi liquid leads. The result can be used to infer the strength of interactions from transport experiments
Keywords
Cite
@article{arxiv.1206.5211,
title = {Non-Equilibrium Transport Through a Gate-Controlled Barrier on the Quantum Spin Hall Edge},
author = {Roni Ilan and Jérôme Cayssol and Jens H. Bardarson and Joel E. Moore},
journal= {arXiv preprint arXiv:1206.5211},
year = {2013}
}
Comments
6 pages (including supplementary material), 3 figures