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dc.contributor.authorMihalache, V.en_US
dc.contributor.authorDede, M.en_US
dc.contributor.authorOral, A.en_US
dc.contributor.authorSandu, V.en_US
dc.date.accessioned2016-02-08T10:09:43Z
dc.date.available2016-02-08T10:09:43Z
dc.date.issued2008en_US
dc.identifier.issn0921-4534
dc.identifier.urihttp://hdl.handle.net/11693/23158
dc.description.abstractScanning Hall probe microscopy with an effective spatial resolution of ∼1 μm has been used to investigate the vortex structures in superconducting Bi2Sr2CaCu2O8+δ single crystals in the temperature range 77.3-81.3 K and zero applied field (in the presence of the earth field). The vortex images were obtained in real time mode as the temperature increased slowly for 3.36 h. At 77.3 K, the vortices were arranged in a chain structure. With the increase of the temperature, two jumps in the vortex array occur at 77.3 K, immediately when the temperature starts to rise, and at 79.2 K with a good stability between jumps. The second jump is accompanied by the jump in the average magnetic induction when bundles of 4-5 additional vortices enter the scanning area and the vortex array get disordered. These directly visualized transitions in the vortex lattice are consistent with a vortex creep over the surface barriers at high temperatures. A short movie is presented. ,en_US
dc.language.isoEnglishen_US
dc.source.titlePhysica C : Superconductivity and its Applicationsen_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.physc.2007.11.059en_US
dc.subjectBi-2212en_US
dc.subjectSurface barriersen_US
dc.subjectVortex imagingen_US
dc.subjectVortex structureen_US
dc.subjectElectromagnetic inductionen_US
dc.subjectHigh temperature effectsen_US
dc.subjectSingle crystalsen_US
dc.subjectStabilityen_US
dc.subjectSuperconducting devicesen_US
dc.subjectVortex flowen_US
dc.subjectSurface barriersen_US
dc.subjectVortex imagingen_US
dc.subjectVortex structureen_US
dc.subjectSemiconducting bismuth compoundsen_US
dc.titleVortex imaging with varying temperature revealed by SHPM on Bi2Sr2CaCu2O8+yen_US
dc.typeArticleen_US
dc.departmentDepartment of Physics
dc.citation.spage832en_US
dc.citation.epage836en_US
dc.citation.volumeNumber468en_US
dc.citation.issueNumber7-10en_US
dc.identifier.doi10.1016/j.physc.2007.11.059en_US
dc.publisherElsevier B.V.en_US


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