Finite-temperature conductance of interacting quantum wires with Rashba spin-orbit coupling

Article

关键词: ONE-DIMENSION;    TRANSPORT;    NANOWIRE;    FERMIONS;    LIQUIDS;   

DOI  :  10.1103/PhysRevB.88.235429

来源: SCIE

【 摘 要 】

We calculate the finite-temperature conductance of clean, weakly interacting one-dimensional quantum wires subject to Rashba spin-orbit coupling and a magnetic field. For chemical potentials near the center of the Zeeman gap (mu = 0), two-particle scattering causes the leading deviation from the quantized conductance at finite temperatures. On the other hand, for vertical bar mu vertical bar > 0, three-particle scattering processes become more relevant. These deviations are a consequence of the strongly nonlinear single-particle spectrum, and are thus not accessible using Luttinger liquid theory. We discuss the observability of these predictions in current experiments on InSb nanowires and in spiral liquids, where a spontaneous ordering of the nuclear spins at low temperatures produces an effective Rashba coupling.

【 授权许可】

Free