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Specular Andreev Reflection in the Interface of a Two-Dimensional Semiconductor with Rashba Spin-Orbit Coupling and a d-Wave Superconductor

Journal Article


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Abstract


  • We reveal that the recently discovered specular Andreev reflection (SAR) [C. W. J. Beenakker, Phys.

    Rev. Lett. 97, 067007 (2006)] can occur in semiconductors where the spin-orbit coupling is finite. We

    demonstrate this finding in the hybrid of a two-dimensional electron gas with Rashba spin-orbit coupling

    and a superconductor. In the limit of low density or a strong spin-orbit coupling, specular Andreev

    reflection is finite. We also show that unit electron-hole conversion is possible in a specular Andreev

    reflection due to the different topological structures of the equal-energy surface between electrons and

    holes. The SAR in the semiconductor is determined by the relative orientation of wave vector to group

    velocity, which can be analyzed by ray equations.

Authors


  •   Lv, Bo (external author)
  •   Chao Zhang
  •   Ma, Zhongshui (external author)

Publication Date


  • 2012

Citation


  • Lv, B., Zhang, C. & Ma, Z. (2012). Specular Andreev Reflection in the Interface of a Two-Dimensional Semiconductor with Rashba Spin-Orbit Coupling and a d-Wave Superconductor. Physical Review Letters, 108 (7), 077002-1-077002-5.

Scopus Eid


  • 2-s2.0-84863160503

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=7384&context=engpapers&unstamped=1

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/4452

Start Page


  • 077002-1

End Page


  • 077002-5

Volume


  • 108

Issue


  • 7

Place Of Publication


  • http://prl.aps.org/

Abstract


  • We reveal that the recently discovered specular Andreev reflection (SAR) [C. W. J. Beenakker, Phys.

    Rev. Lett. 97, 067007 (2006)] can occur in semiconductors where the spin-orbit coupling is finite. We

    demonstrate this finding in the hybrid of a two-dimensional electron gas with Rashba spin-orbit coupling

    and a superconductor. In the limit of low density or a strong spin-orbit coupling, specular Andreev

    reflection is finite. We also show that unit electron-hole conversion is possible in a specular Andreev

    reflection due to the different topological structures of the equal-energy surface between electrons and

    holes. The SAR in the semiconductor is determined by the relative orientation of wave vector to group

    velocity, which can be analyzed by ray equations.

Authors


  •   Lv, Bo (external author)
  •   Chao Zhang
  •   Ma, Zhongshui (external author)

Publication Date


  • 2012

Citation


  • Lv, B., Zhang, C. & Ma, Z. (2012). Specular Andreev Reflection in the Interface of a Two-Dimensional Semiconductor with Rashba Spin-Orbit Coupling and a d-Wave Superconductor. Physical Review Letters, 108 (7), 077002-1-077002-5.

Scopus Eid


  • 2-s2.0-84863160503

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=7384&context=engpapers&unstamped=1

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/4452

Start Page


  • 077002-1

End Page


  • 077002-5

Volume


  • 108

Issue


  • 7

Place Of Publication


  • http://prl.aps.org/