Comprehensive Demonstration of Spin-Hall Hanle Effects in Epitaxial Pt Thin Films

Abstract

We demonstrate a nonlinear Hall effect due to the boundary spin accumulation in Pt films grown on Al2O3 substrates. This Hall effect and the previously demonstrated Hanle magnetoresistance provide a complete picture of the spin-precession control of the spin and charge transport at the boundary of a spin-orbit coupled material, which we refer to as spin-Hall Hanle effects (SHHE). We also show that the SHHE can be employed to measure the spin diffusion length, the spin-Hall angle, and the spin relaxation time of heavy metal without the need of magnetic interface or the input from other measurements. The comprehensive demonstration of SHHE in such a simple system suggests they may be ubiquitous and needs to be considered for unravelling the spin and charge transport in more complex thin film structures of spin-orbit coupled materials.

References in corpus (3)

• Direct electronic measurement of the spin Hall effect
• Theory of spin Hall magnetoresistance
• Magnetoresistance due to edge spin accumulation

Cited by in corpus (5)

• Orbital Hanle Magnetoresistance in a 3d Transition Metal
• Competing Ordinary and Hanle Magnetoresistance in Pt and Ti Thin Films
• Giant interfacial spin-Hall angle from Rashba-Edelstein effect revealed by the spin-Hall Hanle processes
• Persistent Interfacial Topological Hall Effect Demonstrating Electrical Readout of Topological Spin Structures in Insulators
• Giant Topological Hall Effect Across Wide Temperature in Pt/NiCo2O4 Heterostructure