The Electron Glass in a Switchable Mirror: Relaxation, Aging and Universality
Strongly Correlated Electrons
2009-11-10 v2
Abstract
The rare earth hydride YH can be tuned through the metal-insulator transition both by changing 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, Coulomb gap depth, and temperature, we demonstrate that polycrystalline YH serves as a model system for studying the properties of the interacting electron glass. Prominent among its features are logarithmic relaxation, aging, and universal scaling of the conductivity.
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Cite
@article{arxiv.cond-mat/0408495,
title = {The Electron Glass in a Switchable Mirror: Relaxation, Aging and Universality},
author = {M. Lee and P. Oikonomou and P. Segalova and T. F. Rosenbaum and A. F. Th. Hoekstra and P. B. Littlewood},
journal= {arXiv preprint arXiv:cond-mat/0408495},
year = {2009}
}