Control of spin currents with double spin resonance

Reference:

Nogaret, A., Saraiva, P., Dai, B. and Portal, J. C., 2010. Control of spin currents with double spin resonance. Physica E-Low-Dimensional Systems & Nanostructures, 42 (4), pp. 926-928.

Related documents:

Official URL:

http://dx.doi.org/10.1016/j.physe.2009.11.051

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.

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