Induced Spin-Currents in Alkali-Films
Gerd Bergmann, Funing Song, Doug Garrett
TL;DR
This paper investigates how spin currents are generated and detected in alkali metal films within FeK and FeCs sandwiches, revealing differences in electron reflection that lead to measurable spin phenomena.
Contribution
It demonstrates the generation of spin currents in alkali films due to interface reflection asymmetries, detected via the anomalous Hall effect.
Findings
Large mean free path of conduction electrons in alkali metals.
Different specular reflection for spin up and down electrons at interfaces.
Detection of spin currents through anomalous Hall effect.
Abstract
In sandwiches of FeK and FeCs the conduction electrons in the alkali metals have a large mean free path. The experiments suggest that the specular reflection for spin up and down electrons is different at the interface yielding a spin current in the alkali film. The spin current is detected by the anomalous Hall effect of Pb surface impurities.
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