Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session N50: Spin-wave transport, damping and interfacial effects for tailoring magnetization dynamics
11:30 AM–2:30 PM,
Wednesday, March 8, 2023
Room: Room 320
Sponsoring
Unit:
DCOMP
Chair: Zhihao Jiang, University of Illinois at Urbana-Champaign
Abstract: N50.00004 : Calculating spatially resolved (charge, spin and orbital) currents and what we can do with them
1:18 PM–1:54 PM
Presenter:
Paul Kelly
(University of Twente)
Author:
Paul Kelly
(University of Twente)
I illustrate our approach with a study of the temperature dependence of the spin-flip diffusion length and spin Hall angle for the bulk 5d transition metals [4]. It allowed us to evaluate the transport parameters required to describe a spin current through interfaces between two non-magnetic metals or between a non-magnetic and a ferromagnetic metal and focus on the temperature dependence of the spin memory loss that describes interface spin flipping [5]. When we use it to study the spin Hall effect in a thin Pt film, we find that we cannot recover the bulk spin-flip diffusion length without taking surface effects into account. The same approach allows us to examine the shunting of a charge current passed through a bilayer parallel to the interface [1], the Fuchs-Sondheimer suppression of charge currents by surfaces and interfaces [1] or the efficiency with which a spin or orbital Hall current is injected laterally from e.g Pt into Au or from Co or Py into Cu.
This work was carried out in collaboration with Rohit Nair, Max Rang, K. Gupta, R.J.H. Wesselink, R.X. Liu, Z. Yuan and E. Barati
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