Behavior of a Josephson-junction array with golden mean frustration
Mohammad R. Kolahchi, Hossein Fazli
DOI 10.1103/PhysRevB.62.9089 · Physical Review B
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Abstract
The Josephson-junction array at the golden mean frustration factor behaves as a supercooled liquid above T*≃0.25 showing a time-temperature scaling in its relaxation. Below T* the relaxation becomes exceedingly slow and scaling is lost. We propose that at T* the system crosses over to a regime where it can sense the presence of the many local minima in the energy landscape. Furthermore, the system undergoes a first-order transition at 0.14<T1<0.16. The study of the equilibrium properties of the system below T1 indicates anisotropy in the phase coherence; this is due to the unique structure of the vortex lattice.
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