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Proceedings Paper

Metal-insulator transition and glassy behavior in two-dimensional electron systems
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Paper Abstract

Studies of low-frequency resistance noise demonstrate that glassy freezing occurs in a two-dimensional electron system in silicon in the vicinity of the metal-insulator transition (MIT). The width of the metallic glass phase, which separates the 2D metal and the (glassy) insulator, depends strongly on disorder, becoming extremely small in high-mobility (low-disorder) samples. The glass transition is manifested by a sudden and dramatic slowing down of the electron dynamics, and by a very abrupt change to the sort of statistics characteristic of complicated multistate systems. In particular, the behavior of the second spectrum, an important fourth-order noise statistic, indicates the presence of long-range correlations between fluctuators in the glassy phase, consistent with the hierarchical picture of glassy dynamics.

Paper Details

Date Published: 9 May 2003
PDF: 15 pages
Proc. SPIE 5112, Noise as a Tool for Studying Materials, (9 May 2003); doi: 10.1117/12.488847
Show Author Affiliations
Dragana Popovic, National High Magnetic Field Lab. (United States)
Snezana Bogdanovich, National High Magnetic Field Lab. (United States)
Jan J. Jaroszynski, National High Magnetic Field Lab. (United States)
Teun M. Klapwijk, Delft Univ. of Technology (Netherlands)


Published in SPIE Proceedings Vol. 5112:
Noise as a Tool for Studying Materials
Michael B. Weissman; Nathan E. Israeloff; A. Shulim Kogan, Editor(s)

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