Positional Disorder in the Fully Frustrated Josephson Junction Array: Random Gaussian Phase Shifts in the Fully Frustrated 2D XY Model

Journal Article · Tue Jun 01 04:00:00 EDT 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.82.5313· OSTI ID:349369

Gupta, P; Teitel, S ^[1]

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1. Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627 (United States)

We consider the effect of positional disorder on a Josephson junction array with an applied magnetic field of f=1/2 flux quantum per unit cell. This is equivalent to the problem of random Gaussian phase shifts in the fully frustrated 2D XY model. Using simple analytical arguments and numerical simulations, we present evidence that the ground state vortex lattice of the pure model becomes disordered, in the thermodynamic limit, by {ital any} finite amount of positional disorder. {copyright} {ital 1999} {ital The American Physical Society}

• Research Organization: University of Rochester
• DOE Contract Number: FG02-89ER14017
• OSTI ID: 349369
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 26 Vol. 82; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
GROUND STATES
HIGH-TC SUPERCONDUCTORS
JOSEPHSON JUNCTIONS
MAGNETIC FLUX
PHASE SHIFT
RANDOMNESS
SIMULATION
VORTICES