Large spin Hall effect in 5d-transition metal anti-perovskites

TL;DR

This paper reports large spin Hall effects in 5d-transition metal anti-perovskites, highlighting their potential for low-power spintronic devices due to orbital mixing induced by spin-orbit coupling.

Contribution

It introduces 5d-transition metal anti-perovskites as new materials exhibiting large SHE, expanding the class of promising spintronic materials.

Findings

Large SHE observed in four 5d-transition metal anti-perovskites

Origin of SHE linked to orbital mixing caused by spin-orbit coupling

Potential for ultra-low power spintronic applications

Abstract

The spin Hall effect (SHE) is highly promising for spintronic applications, and the design of materials with large SHE can enable ultra-low power memory technology. Recently, 5d-transition metal oxides have been shown to demonstrate a large SHE. Here we report large values of SHE in four 5d-transition metal anti-perovskites which makes these anti-perovskites promising spintronic materials. We demonstrate that these effects originate in the mixing of dx2-y2 and dxy orbitals caused by spin orbit coupling.