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Phys Rev Lett. 2001 Mar 19;86(12):2677-80. doi: 10.1103/PhysRevLett.86.2677.

Optical manipulation of nuclear spin by a two-dimensional electron gas.

Physical review letters

G Salis, D T Fuchs, J M Kikkawa, D D Awschalom, Y Ohno, H Ohno

Affiliations

  1. Department of Physics, University of California, Santa Barbara, California 93106, USA.

PMID: 11290009 DOI: 10.1103/PhysRevLett.86.2677

Abstract

Conduction electrons are used to optically polarize, detect, and manipulate nuclear spin in a (110) GaAs quantum well. Using optical Larmor magnetometry, we find that nuclear spin can be polarized along or against the applied magnetic field, depending on field polarity and tilting of the sample with respect to the optical pump beam. Periodic optical excitation of the quantum-confined electron spin reveals a complete spectrum of optically induced and quadrupolar-split nuclear resonances, as well as evidence for Deltam = 2 transitions.

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