RT Journal Article
T1 Dimensional crossovers in the Gaussian critical fluctuations above Tc of two‑layer and three‑layer superconductors
A1 Viz, A.S.
A1 Martínez Botana, José Martín
A1 Verde, J.C.
A1 Vázquez Ramallo, Manuel
K1 Superconductivity in nanosystems
K1 Critical phenomena in superconductors
K1 Twodimensional materials
K1 Lawrence–Doniach models
AB By using a Ginzburg–Landau functional in the Gaussian approximation, we calculate the energy of superconducting fluctuations above the transition, at zero external magnetic field, of a system composed by a small number N of parallel two-dimensional superconducting planes, each of them Josephson coupled to its first neighbour, with special focus in the N = 2 and 3 cases. This allows us to obtain expressions for the critical contributions to various observables (fluctuation specific heat and magnetic susceptibility and Aslamazov–Larkin paraconductivity). Our results suggest that these systems may display deviations from pure 2D behaviour and interesting crossover effects, with both similitudes and differences to those known to occur in infinite-layers superconductors. Some challenges for future related research are also outlined.
PB Springer
YR 2022
FD 2022-05-16
LK https://hdl.handle.net/10347/38061
UL https://hdl.handle.net/10347/38061
LA eng
NO Viz, A.S., Botana, M.M., Verde, J.C. et al. Dimensional crossovers in the Gaussian critical fluctuations above Tc of two-layer and three-layer superconductors. SN Appl. Sci. 4, 175 (2022). https://doi.org/10.1007/s42452-022-05050-8
DS Minerva
RD 1 may 2026