Diluted Josephson-junction arrays in a magnetic field: phase coherence and vortex glass thresholds

Benakli, Mourad ; Granato, Enzo ; Shenoy, Subodh R. ; Gabay, Marc (1998) Diluted Josephson-junction arrays in a magnetic field: phase coherence and vortex glass thresholds Physical Review B: Condensed Matter and Materials Physics, 57 (17). pp. 10314-10317. ISSN 1098-0121

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Official URL: http://prb.aps.org/abstract/PRB/v57/i17/p10314_1

Related URL: http://dx.doi.org/10.1103/PhysRevB.57.10314

Abstract

The effects of random dilution of junctions on a two-dimensional Josephson-junction array in a magnetic field are considered. For rational values of the average flux quantum per plaquette f, the superconducting transition temperature vanishes, for increasing dilution at a critical value xS(f), while the vortex ordering remains stable up to xVL > xS, far below the value xp corresponding to the geometric percolation threshold. For xVL < x < xp, the array behaves as a zero-temperature vortex glass. Numerical results for f=½ from defect energy calculations are presented and are consistent with this scenario.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:46012
Deposited On:30 Jun 2011 10:01
Last Modified:18 May 2016 02:04

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