Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session G57: Spin and Orbital Currents
11:30 AM–2:30 PM,
Tuesday, March 7, 2023
Room: Room 303
Sponsoring
Unit:
GMAG
Chair: Giovanni Vignale, University of Missouri
Abstract: G57.00009 : Comprehensive Demonstration of Spin Hall Hanle Effects in Epitaxial Pt Films*
1:30 PM–1:42 PM
Presenter:
Andrew H Comstock
(North Carolina State University)
Authors:
Andrew H Comstock
(North Carolina State University)
Jing Li
(University of Nebraska - Lincoln)
Dali Sun
(North Carolina State University)
Xiaoshan Xu
(University of Nebraska - Lincoln)
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.
*This research was primarily supported by the U.S. Department of Energy (DOE), Office ofScience, Basic Energy Sciences (BES), under Award No. DE-SC0019173. The work at NC Statewas supported by the U.S. Department of Energy (DOE), Office of Science, Basic EnergySciences (BES), under Award No. DE-SC0020992. The research was performed in part in theNebraska Nanoscale Facility: National Nanotechnology Coordinated Infrastructure and theNebraska Center for Materials and Nanoscience (and/or NERCF), which are supported by theNational Science Foundation under Award ECCS: 1542182, and the Nebraska ResearchInitiative.
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