Spinmotive force with static and uniform magnetization induced by a time-varying electric field

TL;DR

This paper predicts a novel spinmotive force in ferromagnets with spin-orbit coupling, induced by a time-varying electric field, which can be detected without inductive voltage and tuned electrically.

Contribution

The study extends the theory of spinmotive force to show that static, uniform magnetization can be induced by a time-varying electric field in ferromagnets with spin-orbit coupling.

Findings

Proposes experimental setups for detecting the effect.

Shows the spinmotive force can be electrically tuned.

Demonstrates detection free from inductive voltage.

Abstract

A new spinmotive force is predicted in ferromagnets with spin-orbit coupling. By extending the theory of spinmotive force, we show that a time-varying electric field can induce a spinmotive force with static and uniform magnetization. This spinmotive has two advantages; it can be detected free from the inductive voltage owing to the absence of dynamical magnetization and it can be tuned by electric fields. To observe the effect, we propose two experimental setups: electric voltage measurement in a single ferromagnet and spin injection from a ferromagnet into an attached nonmagnetic conductor.