Europhys. Lett, 47 (5), pp. 608-614 (1999)
Low-temperature dephasing in disordered conductors:
The effect of "1/f'' fluctuations
Y. Imry 1, H. Fukuyama 2 and P. Schwab 3
1 Weizmann Institute of Science, Department of Condensed Matter
IL-76100 Rehovot, Israel
2 Physics Department, Faculty of Science, Tokyo University
Hongo, Bunkyo-ku, Tokyo 113 Japan
3 Dipartimento di Fisica, Università degli Studi di Roma "La Sapienza''
Piazzale Aldo Moro 2, I-00185 Roma, Italy
(received 21 May 1999; accepted 5 July 1999)
PACS. 73.23 - Mesoscopic systems.
PACS. 72.10 - Theory of electronic transport; scattering mechanisms.
Electronic quantum effects in disordered conductors are controlled by the conduction electrons' dephasing rate, which is expected to vanish with the temperature. Consider the very intriguing recently reported apparent saturation of this dephasing rate in several systems at very low temperatures. While the "standard model'' of a conductor with static defects can not have such an effect, allowing some dynamics of the defects may produce it.
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