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Title:The pressure dependence of the thermoelectric power of sodium between 5°K and 14°K
Author(s):Weiss, Jonathon David
Doctoral Committee Chair(s):Lazarus, David
Department / Program:Physics
Discipline:Physics
Degree:Ph.D.
Genre:Dissertation
Subject(s):pressure dependenc
thermoelectric power
sodium
Abstract:The effect of pressure has been measured on the thermoelectric power of sodium between 5°K and l4°K where phonon drag is believed to play a prominent role. A Superconducting Quantum Interference Device ("SQUID") was used to measure the tiny voltages involved. At 1 and 2 kilobars no effect was observable, but at 3 kilobars the thermoelectric power was observed to grow smaller in magnitude, but remained negative. The effect of pressure was most noticeable above 110K and was monotonically increasing with temperature above that point. The results have been compared with the predictions of a theory of phonon drag thermoelectric power by Bailyn, which are in rather good qualitative agreement with the data. The results of this experiment therefore support his contention that a detailed understanding of the lattice spectrum, rather than Fermi-surface distortion, is necessary to understand the role of phonon drag in the alkali metals.
Issue Date:1974
Genre:Dissertation / Thesis
Type:Text
Language:English
URI:http://hdl.handle.net/2142/29964
Other Identifier(s):2367990
Rights Information:©1974 Weiss
Date Available in IDEALS:2012-03-02


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