Phys. Rev. B 68, 165345 (2003) [9 pages]

Quantum phase transitions in dissipative tunnel junctions

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Scott Drewes^*, Daniel P. Arovas^†, and Scot Renn^‡
Department of Physics, University of California at San Diego, La Jolla, California 92093, USA

Received 21 January 2003; published 29 October 2003

The Ueda-Guinea model of a dissipative tunnel junction is investigated. This model accounts for final-state effects associated with single-electron tunneling. A quantum phase transition emerges, marking a boundary between insulating (Coulomb blockade) and conducting phases. The system is analyzed by large-N techniques, self-consistent harmonic approximation, and Monte Carlo methods.

URL:

http://link.aps.org/doi/10.1103/PhysRevB.68.165345

DOI:

10.1103/PhysRevB.68.165345

PACS:

73.23.Hk, 73.40.Gk, 73.20.Jc, 85.30.Mn

^*Permanent address: Prediction Sciences, 9630 Towne Center Drive, San Diego California 92122, USA.

^†Author to whom correspondence should be addressed. Electronic address: darovas@ucsd.edu

^‡Permanent address: Institute for Defense Analyses, Alexandria, Virginia 22311, USA.

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Phys. Rev. B 68, 165345 (2003) [9 pages]

Quantum phase transitions in dissipative tunnel junctions