# name
Fully frustrated XY model with next-nearest-neighbor interaction

# metadata.dc.description.abstract[].value
We investigate a fully frustrated XY model with nearest-neighbor ~NN! and next-nearest-neighbor ~NNN!
couplings which can be realized in Josephson junction arrays. We study the phase diagram for 0<x<1 (x is
the ratio between NNN and NN couplings!. When x,1/A2 an Ising transition and a Berezinskii-KosterlitzThouless
transition are present. Both critical temperatures decrease with increasing x. For x.1/A2 the array
undergoes a sequence of two transitions. On raising the temperature first the two sublattices decouple from
each other and then, at higher temperatures, each sublattice becomes disordered. The structure of phase
diagram remains the same if weak interaction with further neighbors is included.

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Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.62.R9287

# metadata.dc.source[].value
Articles publicats en revistes (Física de la Matèria Condensada)

# metadata.dc.title[].value
Fully frustrated XY model with next-nearest-neighbor interaction