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Title: Phase transitions in frustrated two-dimensional XY models

Journal Article · · Phys. Rev. B: Condens. Matter; (United States)

We study the fully frustrated XY model on a square lattice with the use of Monte Carlo simulations. We find a phase transition at a finite temperature T/sub I/ with the specific-heat data being consistent with a logarithmic divergence. The helicity modulus UPSILON jumps to zero with a value UPSILON/k/sub B/T> or approx. =2/..pi.. at a T< or approx. =T/sub I/. The application of frustrated XY models to the behavior of coupled Josephson junction arrays is discussed.

Research Organization:
Department of Physics, The Ohio State University, Columbus, Ohio 43210
OSTI ID:
6147949
Journal Information:
Phys. Rev. B: Condens. Matter; (United States), Vol. 27:1
Country of Publication:
United States
Language:
English