Control of spin currents with double spin resonance

Alain Nogaret, Pedro Saraiva, B Dai, J C Portal

Research output: Contribution to journalArticlepeer-review

Abstract

This paper develops a theoretical picture for coherently controlling spin currents with two resonant transitions which bridge the Zeeman gap of a two-dimensional electron system. One spin flip transition is propelled by r.f. electron oscillations in a sloping magnetic field. The second transition is induced by microwaves. When both transitions are simultaneously resonant, spin flips are inhibited by a formation of a dark state. We calculate the probability of this dark state as the system crosses resonance and show that it fits the ESR peak in the resistance of a magnetic superlattice.
Original languageEnglish
Pages (from-to)926-928
Number of pages3
JournalPhysica E-Low-Dimensional Systems & Nanostructures
Volume42
Issue number4
DOIs
Publication statusPublished - Feb 2010
Event18th International Conference on Electronic Properties of Two-Dimensional Systems - Kobe, Japan
Duration: 19 Jul 200924 Jul 2009

Keywords

  • inhomogeneous magnetic field
  • spin resonance

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