Aharonov-Bohm Physics with Spin II: Spin-Flip Effects in Two-dimensional Ballistic Systems
arXiv:cond-mat/0402168 · doi:10.1103/PhysRevB.69.155327
Abstract
We study spin effects in the magneto-conductance of ballistic mesoscopic systems subject to inhomogeneous magnetic fields. We present a numerical approach to the spin-dependent Landauer conductance which generalizes recursive Green function techniques to the case with spin. Based on this method we address spin-flip effects in quantum transport of spin-polarized and -unpolarized electrons through quantum wires and various two-dimensional Aharonov-Bohm geometries. In particular, we investigate the range of validity of a spin switch mechanism recently found which allows for controlling spins indirectly via Aharonov-Bohm fluxes. Our numerical results are compared to a transfer-matrix model for one-dimensional ring structures presented in the first paper (Hentschel et al., submitted to Phys. Rev. B) of this series.
29 pages, 15 figures. Second part of a series of two articles
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- Semiconductor Spintronics
- Spin interference effects in ring conductors subject to Rashba coupling
- Effects of short-range interactions on transport through quantum point contacts: A numerical approach
- Constructing Spin Interference Devices from Nanometric Rings
- Spin Aharonov-Bohm effect and topological spin transistor
- Optimal block-tridiagonalization of matrices for coherent charge transport
- Charge and spin dynamics driven by ultrashort extreme broadband pulses: a theory perspective
- Effect of spin-orbit coupling on zero-conductance resonances in asymmetrically coupled one-dimensional rings
- Rashba quantum wire: exact solution and ballistic transport
- Semiclassical theory of weak antilocalization and spin relaxation in ballistic quantum dots
- Pumping in a mesoscopic ring with Ahronov-Casher effect
- Aharonov-Bohm Physics with Spin I: Geometric Phases in One-dimensional Ballistic Rings
- Determination of Rashba and Dresselhaus spin-orbit fields
- Coherent spin ratchets: A spin-orbit based quantum ratchet mechanism for spin-polarized currents in ballistic conductors
- Filtering of spin currents based on ballistic ring
- Quantum pumping and rectification effects in Aharonov-Bohm-Casher ring-dot systems
- Quantum interference and the time-dependent radiation of nanojunctions
- Coherent switching by detuning a side-coupled quantum-dot system
- Entanglement production in chaotic quantum dots subject to spin-orbit coupling
- Spin-polarized transport in helical membranes due to spin-orbit coupling
- Theory of spin polarization in mesoscopic spin-orbit coupling systems
- Negative Differential Spin Conductance by Population Switching
- Localized states in a semiconductor quantum ring with a tangent wire
- Aharonov-Casher oscillations of spin current through a multichannel mesoscopic ring