High-field optically detected nuclear magnetic resonance in GaAs

2005/01/26 by M. Poggio, D. D. Awschalom
Physics and Astronomy · #cond-mat.mes-hall

paper · pdf · doi:10.1063/1.1923191

published as Appl. Phys. Lett. 86, 182103 (2005) · 4 pages, 3 figures

arxiv created 2005/01/26 · arxiv updated 2009/12/01

Abstract

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%.

Related

• Light-Activated Nuclear Spin Polarization in Dilute Ferromagnetic (Ga,Mn)As
• Spin characterization and control over the regime of radiation-induced zero-resistance states
• Individual Mechanisms of Nuclear Spin Decoherence in a Nanoscale GaAs NMR Device
• Dynamical nuclear polarization and nuclear magnetic fields in\n semiconductor nanostructures
• Single-shot measurement of transient nuclear magnetization with spin-noise spectroscopy in n-GaAs microcavities