Confirmation of Mcmillan's Concept of Discommensurations in 2h-Tantalum-Diselenide
Suits, Bryan H.
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https://hdl.handle.net/2142/77340
Description
Title
Confirmation of Mcmillan's Concept of Discommensurations in 2h-Tantalum-Diselenide
Author(s)
Suits, Bryan H.
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 nuclear magnetic resonance spectra in a single crystal sample of 2H-TaSe(,2) to study the charge density wave (CDW) in this compound and to test a concept put forth by McMillan. We compare the temperature dependence of the NMR lineshape obtained by Couturie from 4.2 K to 130 K with a lineshape theory which encompasses McMillan's theory as well as the theory which preceded McMillan's. We have utilized precision electrical resistance measurements which, when compared to the recent x-ray diffraction results of Fleming, Moncton, McWhan and DiSalvo, provide us with an independent measure of the CDW properties. Our results confirm McMillan's hypothesis.
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