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Applicability of Layered Sine-Gordon Models to Layered Superconductors II: Case of Magnetic Coupling

Published

Author(s)

I Nandori, K Vad, S Meszaros

Abstract

We show that the phase structure of layered two-dimensional (2D) sine-Gordon systems, which interact via an interlayer coupling, depends on the number of layers. Specifically, both the extrapolation of the Mass-corrected ultraviolet (UV) scaling laws to the infrared (IR) region as well as the calculation of the effective action consistently indicate the existence of a phase transition of the Kosterlitz-Thouless (KT) type at a critical temperature which increases monotonically with the number of layers, and this result remains valid under the inclusion of couplings among next-to-nearest neighboring layers. For a comparatively small number of layers, our theoretical result is in agreement with the experimentally observed thickness dependence of the KT transition temperature TKT of layered high-temperature superconducting materials.
Citation
Physical Review Letters

Citation

Nandori, I. , Vad, K. and Meszaros, S. (2008), Applicability of Layered Sine-Gordon Models to Layered Superconductors II: Case of Magnetic Coupling, Physical Review Letters (Accessed February 27, 2024)
Created October 16, 2008