Spin pumping and inverse Rashba-Edelstein effect in NiFe/Ag/Bi and NiFe/Ag/Sb
Abstract
The Rashba effect is an interaction between the spin and the momentum of electrons induced by the spin-orbit coupling in surface or interface states. We measured the inverse Rashba-Edelstein effect via spin pumping in Ag/Bi and Ag/Sb interfaces. The spin current is injected from the ferromagnetic resonance of a NiFe layer towards the Rashba interfaces, where it is further converted into a charge current. Using spin pumping theory, we quantify the conversion parameter of spin to charge current to be 0.11 ± 0.02 nm for Ag/Bi and a factor of ten smaller for Ag/Sb. The relative strength of the effect is in agreement with spectroscopic measurements and first principles calculations. We also vary the interlayer materials to study the voltage output in relation to the change of the effective spin mixing conductance. The spin pumping experiment offers a straight-forward approach of using spin current as an efficient probe for detecting interface Rashba splitting.
- Authors:
-
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Publication Date:
- OSTI Identifier:
- 22410030
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Applied Physics
- Additional Journal Information:
- Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTIMONY; BISMUTH; CONVERSION; ELECTRIC POTENTIAL; ELECTRONS; FERROMAGNETIC RESONANCE; INTERFACES; L-S COUPLING; PROBES; PUMPING; SILVER; SPIN; SURFACES
Citation Formats
Zhang, Wei, Jungfleisch, Matthias B., Jiang, Wanjun, Pearson, John E., and Hoffmann, Axel. Spin pumping and inverse Rashba-Edelstein effect in NiFe/Ag/Bi and NiFe/Ag/Sb. United States: N. p., 2015.
Web. doi:10.1063/1.4915479.
Zhang, Wei, Jungfleisch, Matthias B., Jiang, Wanjun, Pearson, John E., & Hoffmann, Axel. Spin pumping and inverse Rashba-Edelstein effect in NiFe/Ag/Bi and NiFe/Ag/Sb. United States. https://doi.org/10.1063/1.4915479
Zhang, Wei, Jungfleisch, Matthias B., Jiang, Wanjun, Pearson, John E., and Hoffmann, Axel. 2015.
"Spin pumping and inverse Rashba-Edelstein effect in NiFe/Ag/Bi and NiFe/Ag/Sb". United States. https://doi.org/10.1063/1.4915479.
@article{osti_22410030,
title = {Spin pumping and inverse Rashba-Edelstein effect in NiFe/Ag/Bi and NiFe/Ag/Sb},
author = {Zhang, Wei and Jungfleisch, Matthias B. and Jiang, Wanjun and Pearson, John E. and Hoffmann, Axel},
abstractNote = {The Rashba effect is an interaction between the spin and the momentum of electrons induced by the spin-orbit coupling in surface or interface states. We measured the inverse Rashba-Edelstein effect via spin pumping in Ag/Bi and Ag/Sb interfaces. The spin current is injected from the ferromagnetic resonance of a NiFe layer towards the Rashba interfaces, where it is further converted into a charge current. Using spin pumping theory, we quantify the conversion parameter of spin to charge current to be 0.11 ± 0.02 nm for Ag/Bi and a factor of ten smaller for Ag/Sb. The relative strength of the effect is in agreement with spectroscopic measurements and first principles calculations. We also vary the interlayer materials to study the voltage output in relation to the change of the effective spin mixing conductance. The spin pumping experiment offers a straight-forward approach of using spin current as an efficient probe for detecting interface Rashba splitting.},
doi = {10.1063/1.4915479},
url = {https://www.osti.gov/biblio/22410030},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {Thu May 07 00:00:00 EDT 2015},
month = {Thu May 07 00:00:00 EDT 2015}
}
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