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