Spin current and rectification in one-dimensional electronic systems

Bernd Braunecker*, D. E. Feldman, Feifei Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

We demonstrate that spin current can be generated by an ac voltage in a one-channel quantum wire with strong repulsive electron interactions in the presence of a nonmagnetic impurity and uniform static magnetic field. In a certain range of voltages, the spin current can exhibit a power dependence on the ac voltage bias with a negative exponent. The spin current expressed in units of h/2 per second can become much larger than the charge current in units of the electron charge per second. The spin current generation requires neither spin-polarized particle injection nor time-dependent magnetic fields.

Original languageEnglish
Article number085119
Number of pages11
JournalPhysical Review. B, Condensed matter and materials physics
Volume76
Issue number8
DOIs
Publication statusPublished - Aug 2007

Keywords

  • CARBON NANOTUBES
  • TRANSPORT
  • CONDUCTANCE
  • RATCHETS

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