Generation of highly spin-polarized currents in cascaded InAs spin filters

Link:
Autor/in:
Erscheinungsjahr:
2009
Medientyp:
Text
Schlagworte:
  • Spin
  • Orbits
  • Spin helix
  • Insulators
  • Quantum Dots
  • Spin
  • Orbits
  • Spin helix
  • Insulators
  • Quantum Dots
Beschreibung:
  • We report the generation of highly spin-polarized currents and their detection in cascaded InAs spin filters via transport measurements below 300 mK. The intrinsic spin-Hall effect is used in the first filter to generate two oppositely spin-polarized currents. From the conductance asymmetry at the outputs of the second filter high spin polarizations are determined in all-electrical measurements. The experiments are in good agreement with ballistic quantum transport simulations, which mimic the double-Y-shaped structure constricted by quantum-point contacts. © 2009 American Institute of Physics.
Lizenz:
  • info:eu-repo/semantics/closedAccess
Quellsystem:
Forschungsinformationssystem der UHH
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oai:www.edit.fis.uni-hamburg.de:publications/a0faa903-67ce-4332-847f-0b66a7fc375c