Enhanced spin-orbit coupling in a heavy metal via molecular coupling

Abstract

Heavy metals are key to spintronics because of their high spin-orbit coupling (SOC) leading to efficient spin conversion and strong magnetic interactions. When C60 is deposited on Pt, the molecular interface is metallised and the spin Hall angle in YIG/Pt increased, leading to an enhancement of up to 600% in the spin Hall magnetoresistance and 700% for the anisotropic magnetoresistance. This correlates with Density Functional Theory simulations showing changes of 0.46 eV/C60 in the SOC of Pt. This effect opens the possibility of gating the molecular hybridisation and SOC of metals.

15 pages, 4 figures

References in corpus (4)

• Theory of spin Hall magnetoresistance
• Temperature dependence of spin diffusion length and spin Hall angle in Au and Pt
• Investigation of induced Pt magnetic polarization in Pt/Y3Fe5O12 bilayers
• A nano-carbon route to rare earth free permanent magnetism

Cited by in corpus (3)

• A theoretical perspective on the modification of the magnetocrystalline anisotropy at molecule-cobalt interfaces
• Spin Hall magnetoresistance effect from a disordered interface
• Spin pumping and inverse spin Hall effect in CoFeB/C${}_{60}$ bilayers