An Nmr Test of Mcmillan's Theory of Incommensurate Charge Density Waves
Couturié, Stephen Henry
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https://hdl.handle.net/2142/77199
Description
Title
An Nmr Test of Mcmillan's Theory of Incommensurate Charge Density Waves
Author(s)
Couturié, Stephen Henry
Issue Date
1981
Department of Study
Physics
Discipline
Physics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Physics, Condensed Matter
Language
eng
Abstract
"We have studied the ('77)Se NMR in single crystal of 2H-TaSe(,2) to test McMillan's proposal regarding charge density waves (CDW). We compare the temperature dependence of the NMR lineshape from 4.2 K to 130 K with predictions based on McMillan's theory, utilizing the recent x-ray diffraction results of Fleming, Moncton, McWhan, and DiSalvo. We employ a theory by Suits to relate the observed lineshape to the alternative theories of the CDW. We confirm McMillan's hypothesis of ""discommensuration""--that the incommensurate CDW is best described by commensurate regions separated by regions of phase slip."
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