Correlation Lengths and Times in Copper Manganese Spin Glasses From Simulation and Experiment
Fenimore, Paul Woodside
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https://hdl.handle.net/2142/80665
Description
Title
Correlation Lengths and Times in Copper Manganese Spin Glasses From Simulation and Experiment
Author(s)
Fenimore, Paul Woodside
Issue Date
1999
Doctoral Committee Chair(s)
Weissman, M.B.
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
Simulations, field-dependent aging and measurements of finite-size effects are used to study correlation lengths and times of Cu1-xMn x spin glasses. Several results are found: a single model inspired by the Parisi solution explains both the experimentally observed aging and equilibrium fluctuation phenomena in Cu1-xMnx, and as one expects the fluctuation dynamics in and out of equilibrium are model dependent; field-dependent aging gives a novel size-scale in Cu1-xMnx, and finite-size effects in single layers of Cu1-xMnx are consistent with previously observed 3-dimensional finite-size scaling in multi-layer samples.
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