Spin transport in inhomogeneous magnetic fields: a proposal for Stern-Gerlach-like experiments with conduction electrons

Abstract

Spin dynamics in spatially inhomogeneous magnetic fields is studied within the framework of Boltzmann theory. Stern-Gerlach-like separation of spin up and spin down electrons occurs in ballistic and diffusive regimes, before spin relaxation sets in. Transient dynamics and spectral response to time-dependent inhomogeneous magnetic fields are investigated, and possible experimental observations of our findings are discussed.

arXiv comment7 pages, 4 figures; revised and extended version, to appear in PRB

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• Drift-Diffusion Approach to Spin-Polarized Transport
• Single-qubit gates and measurements in the surface acoustic wave quantum computer
• Spin-drift transport and its applications
• Electric generation of spin in crystals with reduced symmetry
• Optically induced electron spin currents in the Kretschmann configuration