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Can nuclear magnetic resonance resolve epitaxial layers?

Buratto, Steven K. and Shykind, David N. and Weitekamp, Daniel P. (1992) Can nuclear magnetic resonance resolve epitaxial layers? Journal of Vacuum Science and Technology B, 10 (4). pp. 1740-1743. ISSN 1071-1023. http://resolver.caltech.edu/CaltechAUTHORS:BURjvstb92

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Abstract

The recently demonstrated technique of time-sequenced optical nuclear magnetic resonance in GaAs has made possible the detection of spectra free of the line shape distortions that accompanied earlier steady-state methods with an improvement in sensitivity as well. This work examines the possibility of even higher spectral resolution by means of selective averaging with radio frequency-optical multiple-pulse techniques with the aim of isolating the site-specific changes in the spin Hamiltonian associated with excitation to localized states of the conduction band, as in quantum wells. Simulations are presented to evaluate the approach proposed. It is concluded that such experiments are capable of the sensitivity and resolution to resolve individual epitaxial layers in high-quality structures and would provide unprecedented detail on the electronic structure and its uniformity by way of the nuclear quadrupole and spin-averaged hyperfine interactions.


Item Type:Article
Additional Information:© 2006 American Vacuum Society (Received 31 January 1992; accepted 13 March 1992) This research is sponsored by the Caltech Consortium in Chemistry and Chemical Engineering; founding members: E. I. du Pont de Nemours and Company Inc., Eastman Kodak Company, and Minnesota Mining and Manufacturing. S.K.B. is an AT&T Bell Laboratories Ph.D. Scholar. D.P.W. is a Camille and Henry Dreyfus Teacher-Scholar.
Subject Keywords:NUCLEAR MAGNETIC RESONANCE; ELECTRONIC STRUCTURE; GALLIUM ARSENIDES; COMPUTERIZED SIMULATION; SPATIAL RESOLUTION; EPITAXIAL LAYERS; QUANTUM WELL STRUCTURES; LOCALIZED STATES; LINE SHAPE
Record Number:CaltechAUTHORS:BURjvstb92
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:BURjvstb92
Alternative URL:http://dx.doi.org/10.1116/1.586233
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4457
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:24 Aug 2006
Last Modified:26 Dec 2012 08:59

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