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Title:Complex Phase Behavior of Exotic Oxides: Optical Spectroscopy Studies
Author(s):Yoon, Seokhyun
Doctoral Committee Chair(s):Cooper, S.L.
Department / Program:Physics
Discipline:Physics
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:Ph.D.
Genre:Dissertation
Subject(s):Physics, Condensed Matter
Abstract:We observed that the metal-insulator transition in Ca3Ru 2O7 is characterized by the opening of correlation charge gap. The out-of-phase c-axis oxygen vibration phonon mode is seen to be closely associated with the metal-insulator transition possibly by modulating the bandwidth of the system. We also observed Raman scattering from two-magnon excitations in the antiferromagnetic phase of Ca3Ru 2O7, from which we could estimate the in-plane spin-spin exchange coupling constant J∥. Importantly, we found that Ca3Ru2O7 does not exhibit strong in-plane magnetic correlations above TN.
Issue Date:2001
Type:Text
Language:English
Description:123 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2001.
URI:http://hdl.handle.net/2142/80479
Other Identifier(s):(MiAaPQ)AAI3030497
Date Available in IDEALS:2015-09-25
Date Deposited:2001


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