title: Possible coexistence of local itinerancy and global localization in a quasi-one-dimensional conductor.
abstract: In the chain compound PrBa2Cu4O8 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 PrBa2Cu4O8 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.
authors.affiliation: H.H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, BS8 1TL, United Kingdom.
authors.forename: A
authors.initials: A
authors.lastname: Narduzzo
authors.forename: A
authors.initials: A
authors.lastname: Enayati-Rad
authors.forename: S
authors.initials: S
authors.lastname: Horii
authors.forename: N E
authors.initials: NE
authors.lastname: Hussey