Spin-Flip Diffusion Length in 5d Transition Metal Elements: A First-Principles Benchmark

Rohit S. Nair, Ehsan Barati, Kriti Gupta, Zhe Yuan*, Paul J. Kelly*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Little is known about the spin-flip diffusion length lsf, one of the most important material parameters in the field of spintronics. We use a density-functional-theory based scattering approach to determine values of lsf that result from electron-phonon scattering as a function of temperature for all 5d transition metal elements. lsf does not decrease monotonically with the atomic number Z but is found to be inversely proportional to the density of states at the Fermi level. By using the same local current methodology to calculate the spin Hall angle ΘsH that characterizes the efficiency of the spin Hall effect, we show that the products ρ(T)lsf(T) and ΘsH(T)lsf(T) are constant.

Original languageEnglish
Article number196601
JournalPhysical review letters
Volume126
Issue number19
DOIs
Publication statusPublished - 12 May 2021

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