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Superfluid-insulator transition of the two-dimensional fully-frustrated quantum rotor model in the spherical limit

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Abstract

We study the critical properties of the superfluid-insulator transition in the fully-frustrated quantum rotor model at commensurate filling in two dimensions. By developing a large-N method that is applicable to the model with frustration, we find the finite-size scaling properties in the spherical limit, from which the correlation length critical exponent ? = 1.0 and the dynamical critical exponent z = 1 are confirmed. A universal sheet resistance of R c /R 0 = 1.25(1) at the critical point, where R 0 is the quantum resistance, is obtained, which is consistent with the theoretical prediction.

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Authors and Affiliations

  1. Department of Applied Physics, Hanyang University, Ansan, 426-791, Korea

    Taeyang An & Min-Chul Cha

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  1. Taeyang An
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  2. Min-Chul Cha
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Correspondence to Min-Chul Cha.

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An, T., Cha, MC. Superfluid-insulator transition of the two-dimensional fully-frustrated quantum rotor model in the spherical limit. Journal of the Korean Physical Society 66, 882–886 (2015). https://doi.org/10.3938/jkps.66.882

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  • DOI: https://doi.org/10.3938/jkps.66.882

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