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The electron glass in a switchable mirror: relaxation, ageing and universality

Lee, M. and Oikonomou, P. and Segalova, P. and Rosenbaum, T. F. and Hoekstra, A. F. Th. and Littlewood, P. B. (2005) The electron glass in a switchable mirror: relaxation, ageing and universality. Journal of Physics: Condensed Matter, 17 (43). L439-L444. ISSN 0953-8984. doi:10.1088/0953-8984/17/43/L02.

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The rare earth hydride YH_(3−δ) can be tuned through the metal–insulator transition both by changing δ and by illumination with ultraviolet light. The transition is dominated by strong electron–electron interactions, with transport in the insulator sensitive to both a Coulomb gap and persistent quantum fluctuations. Via a systematic variation of UV illumination time, photon flux, carrier density, and temperature, we demonstrate that polycrystalline YH_(3−δ) serves as a model system for studying the properties of the interacting electron glass. Prominent among its features are logarithmic relaxation, ageing, and universal scaling of the conductivity.

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Additional Information:© 2005 IOP Publishing. Received 18 July 2005, in final form 30 August 2005. Published 14 October 2005. We are indebted to R Griessen for introducing us to the fascinating properties of the rare earth hydrides. The work at the University of Chicago was supported by the National Science Foundation under grant No DMR-0114798.
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Subject Keywords:Condensed matter: electrical, magnetic and optical Condensed matter: structural, mechanical & thermal
Issue or Number:43
Classification Code:PACS 71.30.+h Metal-insulator transitions and other electronic transitions 81.40.Cd Solid solution hardening, precipitation hardening, and dispersion hardening; aging 61.43.Fs Glasses 64.70.P- Glass transitions of specific systems
Record Number:CaltechAUTHORS:20140707-163028226
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46950
Deposited By: George Porter
Deposited On:08 Jul 2014 21:37
Last Modified:12 Jul 2022 19:43

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