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Title:Electronic Noise Studies of Underdoped High Temperature Superconductors
Author(s):Caplan, David
Doctoral Committee Chair(s):Michael Weissman
Department / Program:Physics
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Physics, High Temperature
Abstract:We use electronic transport noise measurements in order to probe normal state properties of high temperature superconductors with the goal of providing further detail about the environment in which the necessary pairing of electrons occurs. We observe an unusual noise component near and below about 200 K in the normal state of underdoped YBCO and Ca-YBCO films. We use several experimental noise-transport techniques in order to elucidate dynamic, thermodynamic and symmetry properties of the underlying fluctuations that cause this excess noise. We have found that this region of noise displays many features, such as large fluctuators, aging effects and a complicated magnetic sensitivity, that one would expect for symmetry-breaking collective electronic state.
Issue Date:2009
Description:122 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2009.
Other Identifier(s):(MiAaPQ)AAI3391894
Date Available in IDEALS:2015-09-25
Date Deposited:2009

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