Crossover from Weak to Strong Localization in Quasi-One-Dimensional Conductors

Autor:	A. L. Bogdanov, H. M. Bozler, A. G. Mikhalchuk, Yu. B. Khavin, Michael Gershenson
Rok vydání:	1997
Předmět:	Physics Weak localization Condensed matter physics Magnetoresistance Crossover General Physics and Astronomy Quasi one dimensional Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Signature (topology) Electrical conductor
Zdroj:	Physical Review Letters. 79:725-728
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.79.725
Popis:	The crossover from weak to strong localization in the resistance of quasi-1D conductors is observed for the first time with decreasing the temperature; it occurs when the phase-breaking length becomes comparable with the localization length. The signature of the strong-localization regime is an activation-type temperature dependence of the resistance and exponentially strong negative magnetoresistance. The magnetoresistance is well described by the theory of doubling of the localization length in quasi-1D conductors in strong fields; this provides a direct measurement of the localization length.
Databáze:	OpenAIRE
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