Pickup, R., Cywinski, R., Pappas, C., Farago, B. and Fouquet, P. (2009) Generalized Spin-Glass Relaxation. Physical Review Letters, 102 (9). 097202. ISSN 0031-9007
Metadata only available from this repository.Abstract
Spin relaxation close to the glass temperature of Cu̲ Mn and Au̲ Fe spin glasses is shown, by neutron spin echo, to follow a generalized exponential function which explicitly introduces hierarchically constrained dynamics and macroscopic interactions. The interaction parameter is directly related to the normalized Tsallis nonextensive entropy parameter q and exhibits universal scaling with reduced temperature. At the glass temperature q=5/3 corresponding, within Tsallis’ q statistics, to a mathematically defined critical value for the onset of strong disorder and nonlinear dynamics
Item Type: | Article |
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Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
Schools: | School of Applied Sciences |
Related URLs: | |
Depositing User: | Sara Taylor |
Date Deposited: | 23 Feb 2012 09:20 |
Last Modified: | 28 Aug 2021 11:14 |
URI: | http://eprints.hud.ac.uk/id/eprint/12830 |
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