Irreversibility line and thermally activated flux flow in Micro-bridges of high-temperature superconductor

We have studied the electrical resistivity as a function of temperature in Micro-bridges of YBa 2 Cu 3 O 7-δ deposited by laser ablation on the SrTiO 3 substrate face, around superconducting transition region in different magnetic fields. The activation energy U 0 was determined and discussed using...

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Bibliographic Details
Published in:E3S web of conferences 2021-01, Vol.229, p.1014
Main Authors: El Hassan, Ahmed Abou, Taoufik, Ahmed, Labrag, Abdelaziz, Bghour, Mustapha, El Hamidi, Habiba, Ait Ahmed, Youssef, Tirbiyine, Ahmed, El Ouaddia, Hassan
Format: Article
Language:English
Subjects:
Critical field (superconductivity)
Electric bridges
Electrical resistivity
High temperature
High temperature superconductors
Laser ablation
Liquid phases
Magnetic fields
Phase diagrams
Strontium titanates
Substrates
YBCO superconductors
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Summary:We have studied the electrical resistivity as a function of temperature in Micro-bridges of YBa 2 Cu 3 O 7-δ deposited by laser ablation on the SrTiO 3 substrate face, around superconducting transition region in different magnetic fields. The activation energy U 0 was determined and discussed using the Arrhenius relation. The irreversibility line B irr and the upper critical field B c2 were obtained using 10% and 90% criteria of the normal-state resistivity value from ρ (T) curves. A phase diagram of the studied sample is constructed showing the Tg glass line and a very broad vortex-liquid phase regime.
ISSN:2267-1242
2555-0403
2267-1242
DOI:10.1051/e3sconf/202122901014