Current Applied Physics

  • 제18권11호
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  • Pages.1182-1184
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  • 2018
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  • 1567-1739(pISSN)
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  • 1567-1739(eISSN)
한국물리학회 (Korean Physical Society)
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Spin-polarization and x-ray magnetic circular dichroism in GaAs

  • Zohar, S. (Linac Coherent Light Source, SLAC National Accelerator Laboratory) ;
  • Ryan, P.J. (Advanced Photon Source, Argonne National Laboratory) ;
  • Kim, J.W. (Advanced Photon Source, Argonne National Laboratory) ;
  • Keavney, D.J. (Advanced Photon Source, Argonne National Laboratory)
  • 투고 : 2018.02.28
  • 심사 : 2018.06.05
  • 발행 : 2018.11.30
⟨ 이전 논문 다음 논문 ⟩

초록

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 $L_3$ edge indicating conduction band spin splitting, with differences in line width and amplitude depending on the source of spin polarization.

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과제정보

연구 과제 주관 기관 : U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences

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