TY  - JOUR
AU  - Lyatti, Matvey
AU  - Kraiem, Ines
AU  - Röper, Torsten
AU  - Gundareva, Irina
AU  - Mussler, Gregor
AU  - Jalil, Abdur Rehman
AU  - Grützmacher, Detlev
AU  - Schäpers, Thomas
TI  - In-Plane Anisotropy of Electrical Transport in Y0.85Tb0.15Ba2Cu3O7−x Films
JO  - Materials
VL  - 17
IS  - 3
SN  - 1996-1944
CY  - Basel
PB  - MDPI
M1  - FZJ-2024-01019
SP  - 558 -
PY  - 2024
AB  - We fabricated high-quality c-axis-oriented epitaxial YBa2Cu3O7−x films with 15% of the yttrium atoms replaced by terbium (YTBCO) and studied their electrical properties. The Tb substitution reduced the charge carrier density, resulting in increased resistivity and decreased critical current density compared to pure YBa2Cu3O7−x films. The electrical properties of the YTBCO films showed an in-plane anisotropy in both the superconducting and normal states that, together with the XRD data, provided evidence for, at least, a partially twin-free film. Unexpectedly, the resistive transition of the bridges also demonstrated the in-plane anisotropy that could be explained within the framework of Tinkham’s model of resistive transition and the Berezinskii–Kosterlitz–Thouless (BKT) model, depending on the sample parameters. Measurements of the differential resistance in the temperature range of the resistive transition confirmed the occurrence of the BKT transition in the YTBCO bridges. Therefore, we consider the YTBCO films to be a promising platform for both the fabrication of devices with high kinetic inductance and fundamental research on the BKT transition in cuprate superconductors.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001161193200001
DO  - DOI:10.3390/ma17030558
UR  - https://juser.fz-juelich.de/record/1021871
ER  -