High-field optically detected nuclear magnetic resonance in GaAs

Details High-field optically detected nuclear magnetic resonance in GaAs High-field optically detected nuclear magnetic resonance in GaAs

2005-01-26

arxiv.org/abs/cond-mat/0501652v1

Appl. Phys. Lett. 86, 182103 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1063/1.1923191

A method for high-field optically detected nuclear magnetic resonance (ODNMR) is developed sensitive to 10**8 nuclei. Nuclear spin transitions are induced using a radio frequency coil and detected through Faraday rotation spectroscopy. Unlike conventional ODNMR, which is limited to low fields and relies on the measurement of time-averaged luminescence polarization, this technique monitors nuclear polarization through time-resolved measurements of electron spin dynamics. Measurements in a (110) GaAs quantum well reveal Ga-69, Ga-71, and As-75 resonances and their quadrupolar splittings while resolving changes in nuclear polarization of 0.02%.

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