Spin transfer torques in nonlocal lateral spin valve

TL;DR

This paper presents a theoretical analysis of spin and electron transport in nonlocal lateral spin valves, revealing unique symmetry properties of spin transfer torques in different magnetic configurations.

Contribution

It provides an analytical derivation of nonlocal magnetoresistance and spin transfer torques, highlighting differences from conventional spin valves.

Findings

Spin transfer torques are symmetrical for parallel and antiparallel configurations.

Analytical expressions for nonlocal magnetoresistance are derived.

Distinct behavior compared to conventional sandwiched spin valves.

Abstract

We report a theoretical study on the spin and electron transport in the nonlocal lateral spin valve with non-collinear magnetic configuration. The nonlocal magnetoresistance, defined as the voltage difference on the detection lead over the injected current, is derived analytically. The spin transfer torques on the detection lead are calculated. It is found that spin transfer torques are symmetrical for parallel and antiparallel magnetic configurations, which is different from that in conventional sandwiched spin valve.