Inelastic electron backscattering in a generic helical edge channel |
| |
Authors: | Schmidt Thomas L Rachel Stephan von Oppen Felix Glazman Leonid I |
| |
Affiliation: | Department of Physics, Yale University, 217 Prospect Street, New Haven, Connecticut 06520, USA. |
| |
Abstract: | We evaluate the low-temperature conductance of a weakly interacting one-dimensional helical liquid without axial spin symmetry. The lack of that symmetry allows for inelastic backscattering of a single electron, accompanied by forward scattering of another. This joint effect of weak interactions and potential scattering off impurities results in a temperature-dependent deviation from the quantized conductance, δG ∝ T4. In addition, δG is sensitive to the position of the Fermi level. We determine numerically the parameters entering our generic model for the Bernevig-Hughes-Zhang Hamiltonian of a HgTe/CdTe quantum well in the presence of Rashba spin-orbit coupling. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|