Properties of LSMO/YBCO cross-strip type junctions

The properties of a La0.67Sr0.33MnO3 (LSMO)/YBa2Cu3O7-δ (YBCO) interface in thin film LSMO/YBCO cross-strip type junctions were investigated by means of electrical transport measurements. Resistance vs. temperature and current-voltage dependences, as well as conductance spectra, were used to charact...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-03, Vol.992 (1), p.12052
Main Authors: Štrbík, V, Nurgaliev, T, Sojková, M, Chromik, Š, Španková, M, Gál, N, Blagoev, B
Format: Article
Language:English
Subjects:
Charge transfer
Dielectric properties
Electrical junctions
Low resistance
Physics
Potential barriers
Strip
Thin films
YBCO superconductors
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Summary:The properties of a La0.67Sr0.33MnO3 (LSMO)/YBa2Cu3O7-δ (YBCO) interface in thin film LSMO/YBCO cross-strip type junctions were investigated by means of electrical transport measurements. Resistance vs. temperature and current-voltage dependences, as well as conductance spectra, were used to characterize the electrical parameters of the interface. The results indicated a low resistance (below 10 Ω), while the dielectric properties of the interface pointed to the presence of a 10-nm wide and 40-meV high dielectric potential barrier. The oxygen vacancies in both LSMO and YBCO films at the interface and the charge transfer through the interface were both considered to explain the insulating character of the LSMO/YBCO interface.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/992/1/012052