Issue |
Europhys. Lett.
Volume 74, Number 2, April 2006
|
|
---|---|---|
Page(s) | 341 - 347 | |
Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
DOI | https://doi.org/10.1209/epl/i2005-10528-9 | |
Published online | 15 March 2006 |
Dissipate locally, couple globally: A sharp transition from decoupling to infinite range coupling in Josephson arrays with on-site dissipation
1
Condensed Matter Theory Center, Department of Physics, University of Maryland College Park, MD 20742, USA
2
Department of Physics and Institute of Theoretical Science, University of Oregon Eugene, OR 97403, USA
Received:
27
October
2005
Accepted:
21
February
2006
We study the normal to superconducting transition of
Josephson arrays with on-site dissipation. A perturbative
renormalization group solution is given. Like the previously
studied case of bond dissipation (BD), this is a “floating"
to coupled (FC) phase transition. Unlike the BD transition,
at which only nearest-neighbor couplings become relevant,
here all inter-grain couplings, out to infinitely
large distances, do so simultaneously. We predict, for the first
time in an FC transition, a diverging spatial correlation length.
Our results show the robustness of floating phases in dissipative
quantum systems.
PACS: 74.81.Fa – Josephson junction arrays and wire networks / 71.10.Hf – Non-Fermi-liquid ground states, electron phase diagrams and phase transitions in model systems / 74.78.Na – Mesoscopic and nanoscale systems
© EDP Sciences, 2006
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