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Title: Spin-polarization and x-ray magnetic circular dichroism in GaAs

Abstract

The combination of angular spin momentum with electronics is a promising successor to charge-based electronics. The conduction bands in GaAs may become spin-polarized via optical spin pumping, doping with magnetic ions, or induction of a moment with an external magnetic field. We investigated the spin populations in GaAs with x-ray magnetic circular dichroism for each of these three cases. We find strong anti-symmetric lineshapes at the Ga L3 edge indicating conduction band spin splitting, with differences in line width and amplitude depending on the source of spin polarization.

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1477039
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Current Applied Physics
Additional Journal Information:
Journal Volume: 18; Journal Issue: 11; Journal ID: ISSN 1567-1739
Publisher:
Korean Physical Society
Country of Publication:
United States
Language:
English
Subject:
Carriers; Magnetic devices; Spin-polarized; Spintronics; X ray magnetic circular dichroism

Citation Formats

Zohar, S., Ryan, P. J., Kim, J. W., and Keavney, D. J.. Spin-polarization and x-ray magnetic circular dichroism in GaAs. United States: N. p., 2018. Web. doi:10.1016/j.cap.2018.06.005.
Zohar, S., Ryan, P. J., Kim, J. W., & Keavney, D. J.. Spin-polarization and x-ray magnetic circular dichroism in GaAs. United States. doi:10.1016/j.cap.2018.06.005.
Zohar, S., Ryan, P. J., Kim, J. W., and Keavney, D. J.. Thu . "Spin-polarization and x-ray magnetic circular dichroism in GaAs". United States. doi:10.1016/j.cap.2018.06.005.
@article{osti_1477039,
title = {Spin-polarization and x-ray magnetic circular dichroism in GaAs},
author = {Zohar, S. and Ryan, P. J. and Kim, J. W. and Keavney, D. J.},
abstractNote = {The combination of angular spin momentum with electronics is a promising successor to charge-based electronics. The conduction bands in GaAs may become spin-polarized via optical spin pumping, doping with magnetic ions, or induction of a moment with an external magnetic field. We investigated the spin populations in GaAs with x-ray magnetic circular dichroism for each of these three cases. We find strong anti-symmetric lineshapes at the Ga L3 edge indicating conduction band spin splitting, with differences in line width and amplitude depending on the source of spin polarization.},
doi = {10.1016/j.cap.2018.06.005},
journal = {Current Applied Physics},
issn = {1567-1739},
number = 11,
volume = 18,
place = {United States},
year = {2018},
month = {11}
}