Spin Angular Momentum Transfer and Plasmogalvanic Phenomena
Maxim Durach, Natalia Noginova
TL;DR
This paper develops a continuity equation for electromagnetic spin angular momentum in matter, revealing how spin forces induce plasmogalvanic effects that generate electromotive forces at metal interfaces.
Contribution
It introduces a new continuity equation for electromagnetic SAM and links spin forces to plasmogalvanic phenomena at metal interfaces.
Findings
Spin forces cause plasmogalvanic effects at metal interfaces.
Electromotive force is pinned to atomically-thin layers.
New theoretical framework for electromagnetic spin transfer.
Abstract
We introduce the continuity equation for the electromagnetic spin angular momentum (SAM) in matter and discuss the torque associated with the SAM transfer in terms of effective spin forces acting in a material. In plasmonic metal, these spin forces result in plasmogalvanic phenomenon which is pinning the plasmon-induced electromotive force to atomically-thin layer at the metal interface.
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