Possible Coexistence of Local Itinerancy and Global Localization in a Quasi-One-Dimensional Conductor

Reference:

Narduzzo, A., Enayati-Rad, A., Horii, S. and Hussey, N., 2007. Possible Coexistence of Local Itinerancy and Global Localization in a Quasi-One-Dimensional Conductor. Physical Review Letters, 98 (14), 146601.

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Official URL:

http://dx.doi.org/10.1103/PhysRevLett.98.146601

Abstract

In the chain compound Pr⁡Ba2Cu4O8 localization appears simultaneously with a dimensional crossover in the electronic ground state when the scattering rate in the chains exceeds the hopping rate between the chains. Here we report the discovery of a large, transverse magnetoresistance in Pr⁡Ba2Cu4O8 in the localized regime. This result suggests a novel form of localization whereby electrons retain their metallic (quasi-one-dimensional) character over a microscopic length scale despite the fact that, macroscopically, they exhibit localized (one-dimensional) behavior.

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