Reference : Finite-temperature conductance of interacting quantum wires with Rashba spin-orbit co...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Finite-temperature conductance of interacting quantum wires with Rashba spin-orbit coupling
Schmidt, Thomas mailto [University of Basel > Department of Physics]
Physical Review. B
[en] 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 $|\mu| > 0$, 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.

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