Low-temperature spin Coulomb drag in a two-dimensional electron gas
A. G. Yashenkin, I. V. Gornyi
TL;DR
This paper investigates the enhancement of spin Coulomb drag at low temperatures in a 2D electron gas, attributing it to quantum coherence effects between spin states, with comprehensive analysis of Coulomb drag phenomena.
Contribution
It provides the first detailed analysis of low-temperature spin Coulomb drag enhancement due to quantum coherence in a 2D electron gas.
Findings
Spin transresistivity is significantly enhanced in the diffusive regime.
Quantum coherence between spin-up and spin-down electrons causes the enhancement.
Comprehensive analysis of spin and interlayer Coulomb drag effects is presented.
Abstract
The phenomenon of low-temperature spin Coulomb drag in a two-dimensional electron gas is investigated. The spin transresistivity coefficient is essentially enhanced in the diffusive regime, as compared to conventional predictions. The origin of this enhancement is the quantum coherence of spin-up and spin-down electrons propagating in the same random impurity potential and coupled via the Coulomb interaction. A comprehensive analysis of spin and interlayer Coulomb drag effects is presented.
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