Strain-Induced Coupling of Spin Current to Nanomechanical Oscillations

TL;DR

This paper introduces a method to couple electron spin to nanomechanical oscillations via strain-induced spin-orbit interaction, enabling spin detection and manipulation without ferromagnetic components.

Contribution

It presents a novel approach using strain-induced spin-orbit coupling in semiconductors to connect spin dynamics with mechanical motion.

Findings

Proposed a strain-based coupling mechanism for spin and mechanical motion.

Demonstrated potential for spin flow detection and control.

Eliminated need for ferromagnetic components in spin-mechanical systems.

Abstract

We propose a setup which allows to couple the electron spin degree of freedom to the mechanical motions of a nanomechanical system not involving any of the ferromagnetic components. The proposed method employs the strain induced spin-orbit interaction of electrons in narrow gap semiconductors. We have shown how this method can be used for detection and manipulation of the spin flow through a suspended rod in a nanomechanical device.