Monte Carlo Studies of Helicity Modulus and Heat Capacity of a Coupled XY Model in Two Dimensions

I. M. Jiang, T. Stoebe, Cheng-Cher Huang

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Abstract

Utilizing Monte Carlo simulation techniques, we have calculated both the helicity modulus and heat capacity versus temperature of a coupled classical XY model in two dimensions. Our model system is based on a Hamiltonian first proposed by Bruinsma and Aeppli [Phys. Rev. Lett. 48, 1625 (1982)]. The helicity modulus results strengthen our previous report of a new type of phase transition in which two distinct types of order are simultaneously established through a single continuous transition.

Original languageEnglish (US)
Pages (from-to)2910-2913
Number of pages4
JournalPhysical Review Letters
Volume76
Issue number16
DOIs
StatePublished - Jan 1 1996

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