With the high-temperature superconductors a qualitatively new regime in the
phenomenology of type-II superconductivity can be accessed. The key elements governing …

Strongly anisotropic layered superconductors are considered within the Lawrence-Doniach
model. The differential finite-difference sine-Gordon equation is derived for the order …

The temperature T s of spontaneous creation of vortex lines in Josephson coupled layered
superconductors is obtained by taking into account the entropy contribution to the free …

In layered superconductors (SC) with small interlayer Josephson coupling vortex-antivortex
phase fluctuations characteristic of quasi two-dimensional (2D) Kosterlitz-Thouless behavior …

Scaling equations are obtained for thermally excited vortex loops in the anisotropic three-
dimensional (3D) XY model with interplane/intraplane coupling ratio K⊥/K∥= γ 0− 2. For …

The nonlinear current-voltage (IV) characteristics are discussed in terms of thermally
activated vortex-antivortex pairs in the CuO 2 planes. The interaction energy of the two …

The vortex-loop interaction for the strongly anisotropic three-dimensional XY model is
calculated by means of Monte Carlo simulations. The results are interpreted in the context of …

A detailed description of phase transitions in two dimensions is presented based on the two-
dimensional classical XY model. After describing the basic physics of topological ordering …

We report on the transport properties of ultrathin YBa 2 Cu 3 O 7− δ (YBCO) layers, and
compare the results with predictions of the Ginzburg-Landau Coulomb-gas (GLCG) model …

One of the most relevant manifestations of the Berezinskii–Kosterlitz–Thouless transition
occurs in quasi-two-dimensional superconducting systems. The experimental advances …