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Strong photon-mixing of terahertz waves in semiconductor quantum wells induced by Rashba spin-orbit coupling

Journal Article


Abstract


  • We demonstrate that due to the Rashba spin-orbit coupling in semiconductor quantum wells, there is strong photo-mixing by mobile carriers in the terahertz frequency regime. The third order nonlinear current is of the same order of magnitude as the linear order current for an electric field intensity of 104 V cm-1 at frequency around 1 THz, a situation easily achievable in a laboratory system. Unlike other nonlinear effects, the nonlinear current density due to the spin-orbit coupling is inversely proportional to the concentration of mobile carriers.

Authors


  •   Gao, Feng (external author)
  •   Wang, Guoxiu
  •   Chao Zhang

Publication Date


  • 2008

Citation


  • Gao, F., Wang, G. & Zhang, C. (2008). Strong photon-mixing of terahertz waves in semiconductor quantum wells induced by Rashba spin-orbit coupling. Nanotechnology, 19 (46), 465401-1-465401-3.

Scopus Eid


  • 2-s2.0-58149240005

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/4002

Start Page


  • 465401-1

End Page


  • 465401-3

Volume


  • 19

Issue


  • 46

Place Of Publication


  • www.iop.org.ezproxy.uow.edu.au:2048/journals/nano

Abstract


  • We demonstrate that due to the Rashba spin-orbit coupling in semiconductor quantum wells, there is strong photo-mixing by mobile carriers in the terahertz frequency regime. The third order nonlinear current is of the same order of magnitude as the linear order current for an electric field intensity of 104 V cm-1 at frequency around 1 THz, a situation easily achievable in a laboratory system. Unlike other nonlinear effects, the nonlinear current density due to the spin-orbit coupling is inversely proportional to the concentration of mobile carriers.

Authors


  •   Gao, Feng (external author)
  •   Wang, Guoxiu
  •   Chao Zhang

Publication Date


  • 2008

Citation


  • Gao, F., Wang, G. & Zhang, C. (2008). Strong photon-mixing of terahertz waves in semiconductor quantum wells induced by Rashba spin-orbit coupling. Nanotechnology, 19 (46), 465401-1-465401-3.

Scopus Eid


  • 2-s2.0-58149240005

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/4002

Start Page


  • 465401-1

End Page


  • 465401-3

Volume


  • 19

Issue


  • 46

Place Of Publication


  • www.iop.org.ezproxy.uow.edu.au:2048/journals/nano