Phase Glass is a Bose Metal: A New Conducting State in Two Dimensions

Denis Dalidovich, Philip Phillips

Research output: Contribution to journalArticlepeer-review


In the quantum rotor model with random exchange interactions having a nonzero mean, three phases, a (i) phase (Bose) glass, (ii) superfluid, and (iii) Mott insulator, meet at a bicritical point. We demonstrate that proximity to the bicritical point and the coupling between the energy landscape and the dissipative degrees of freedom of the phase glass lead to a metallic state at [Formula presented]. Consequently, the phase glass is unique in that it represents a concrete example of a metallic state that is mediated by disorder, even in 2D. We propose that the experimentally observed metallic phase which intervenes between the insulator and the superconductor in a wide range of thin films is in actuality a phase glass.

Original languageEnglish (US)
JournalPhysical review letters
Issue number2
StatePublished - 2002

ASJC Scopus subject areas

  • General Physics and Astronomy


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