Spin transport in mesoscopic rings with inhomogeneous spin-orbit coupling
arXiv:cond-mat/0611086 · doi:10.1103/PhysRevB.76.155326
Abstract
We revisit the problem of electron transport through mesoscopic rings with spin-orbit (SO) interaction. In the well-known path-integral approach, the scattering states for a quasi-1D ring with quasi-1D leads can be expressed in terms of spinless electrons subject to a fictitious magnetic flux. We show that spin-dependent quantum-interference effects in small rings are strongest for spatially inhomogeneous SO interactions, in which case spin currents can be controlled by a small external magnetic field. Mesoscopic spin Hall effects in four-terminal rings can also be understood in terms of the fictitious magnetic flux.
5 pages, 2 figures
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- A proposal for the measurement of Rashba and Dresselhaus spin-orbit interaction strengths in a single sample
- What can we learn about the dynamics of transported spins by measuring shot noise in spin-orbit-coupled nanostructures?
- Spin-charge conversion in multiterminal Aharonov-Casher ring coupled to precessing ferromagnets: A charge conserving Floquet-nonequilibrium Green function approach
- Spin transistor action from Onsager reciprocity and SU(2) gauge theory
- Non-Abelian Aharonov-Casher Phase Factor in Mesoscopic Systems
- Spin-selective localization due to intrinsic spin-orbit coupling
- Anomalous Spin-Related Quantum Phase in Mesoscopic Hole Rings
- Proposal for spin superfluid quantum interference device