The Elusive Bose Metal

Details The Elusive Bose Metal The Elusive Bose Metal

2003-10-14

arxiv.org/abs/cond-mat/0310316v1

SCIENCE, vol. 302, 243-247 (2003)

Physics

Condensed Matter

Superconductivity

Double-spaced with five .eps files at end of text

Scientific paper

10.1126/science.1088253

The conventional theory of metals is in crisis. In the last 15 years, there has been an unexpected sprouting of metallic states in low dimensional systems directly contradicting conventional wisdom. For example, bosons are thought to exist in one of two ground states: condensed in a superconductor or localized in an insulator. However, several experiments on thin metal alloy films have observed that a metallic phase disrupts the direct transition between the superconductor and the insulator. We analyze the experiments on the insulator-superconductor transition and argue that the intervening metallic phase is bosonic. All relevant theoretical proposals for the Bose metal are discussed, particularly the recent idea that the metallic phase is glassy. The implications for the putative vortex glass state in the copper-oxide superconductors are examined.

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