RT Journal Article
T1 A scenario for the critical fluctuations near the transition of few-bilayer films of high-temperature cuprate superconductors
A1 Martínez Botana, José Martín
A1 Vázquez Ramallo, Manuel
K1 High-temperature cuprate superconductors
K1 Critical fluctuations
K1 Very thin films
AB We study the critical fluctuations near the resistive transition of very thin films of high-temperature cuprate superconductors composed of a number 𝒩 of only a few unit cells of superconducting bilayers. For that, we solve the fluctuation spectrum of a Gaussian–Ginzburg–Landau model for few-bilayers superconductors considering two alternating Josephson interlayer interaction strengths, and we obtain the corresponding paraconductivity above the transition. Then, we extend these calculations to temperatures below the transition through expressions for the Ginzburg number and Kosterlitz–Thouless-like critical region. When compared with previously available data in YBa2 Cu3 O7−𝛿  few-bilayers systems, with 𝒩  = 1 to 4, our results seem to provide a plausible scenario for their critical regime.
PB MDPI
YR 2022
FD 2022-12-07
LK https://hdl.handle.net/10347/38062
UL https://hdl.handle.net/10347/38062
LA eng
NO Botana, M.M. ; Ramallo, M.V. A Scenario for the Critical Fluctuations near the Transition of Few-Bilayer Films of High-Temperature Cuprate Superconductors. Nanomaterials 2022, 12, 4368. https://doi.org/10.3390/ nano12244368
NO This work was supported by the Agencia Estatal de Investigación (AEI) and Fondo Europeo de Desarrollo Regional (FEDER) through project PID2019-104296GB-100, by Xunta de Galicia (grant GRC number ED431C 2018/11) and iMATUS (2021 internal project RL3). MMB was supported by Ministerio de Universidades of Spain through the National Program FPU (Grant Number FPU19/05266).
DS Minerva
RD 27 abr 2026