Oscillating spin-orbit interaction as a source of spin-polarized wavepackets in two-terminal nanoscale devices

Viktor Szaszkó-Bogár, Péter Földi, F. M. Peeters

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Ballistic transport through nanoscale devices with time-dependent Rashba-type spin-orbit interaction (SOI) can lead to spin-polarized wavepackets that appear even for completely unpolarized input. The SOI that oscillates in a finite domain generates density and spin polarization fluctuations that leave the region as propagating waves. In particular, spin polarization has space and time dependence even in regions without SOI. Our results are based on an analytical solution of the time-dependent Schrödinger equation. The relevant Floquet quasi-energies that are obtained appear in the energy spectrum of both the transmitted and the reflected waves.

Original languageEnglish
Article number135302
JournalJournal of Physics Condensed Matter
Volume26
Issue number13
DOIs
Publication statusPublished - Apr 2 2014

Keywords

  • quantum transport
  • spindependent transport
  • timedependent scattering

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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