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transport phenomena Kadanoff, L.P. Laramore, George Ernest 2011-07-12T19:05:35Z 2011-07-12T19:05:35Z 10000-01-01 1969 The mode-mode coupling theory of Kadanoff and Swift for the estimation of, transport coefficients near the critical point is applied to the calculation of the electrical conductivity near the superconducting transition and to the calculation of the attenuation coefficient for longitudinal sound waves near the magnetic transition. The rise in the electrical conductivity as a material approaches its superconducting transition is described. Near T c small regions become superconducting and can carry an anomalous current, thereby causing a rise in conductivity. The use of the Kubo formula permits the estimation of the contribution from this source. A comparison of this estimate with previous theories and experiment is carried out. The rise in the ultrasonic attenuation as a material approaches its magnetic transition is described. Near the transition small regions become magnetically ordered and their interaction with the sound wave is enhanced, thereby causing increased absorption of the sound. The Kadanoff and, Swift formalism permits the estimation of this increased attenuation. Predictions are made of the increased attenuation in various models of magnetic systems. A comparison with experiment is carried out. Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-12T19:05:35Z No. of bitstreams: 1 1969_laramore.pdf: 2558083 bytes, checksum: 716daa1a995db1679ea050f956a205ad (MD5) Made available in DSpace on 2011-07-12T19:05:35Z (GMT). No. of bitstreams: 1 1969_laramore.pdf: 2558083 bytes, checksum: 716daa1a995db1679ea050f956a205ad (MD5) Previous issue date: 1969 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-07-12T19:05:35Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:33:20-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis Thesis U of I Only 6075480 http://hdl.handle.net/2142/25786 en 1969 George Ernest Laramore mode-mode coupling theory transport coefficients near the critical point superconducting transition Topics in transport phenomena near the critical point Dissertation / Thesis text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.