Vortex dynamics for in- and out-of-plane magnetic fields in oxygen deficient single crystals of YBa2Cu3O7-delta
2000 (English)In: Physica. B, Condensed matter, ISSN 0921-4526, Vol. 284, no Part. 1, 705-706 p.Article in journal (Refereed) Published
The resistive transition into a glassy vortex state in oxygen deficient single crystals of YBa2Cu3O7-delta (YBCO) has been studied for magnetic fields 0 less than or equal to B less than or equal to 12 T along the crystallographic c-axis, parallel to the ab plane, and also with a small misalignment of 1 degrees from the ab plane. Angular sweeps of the magnetic field reveal a sharp dip in the resistivity for B \textbackslash\textbackslash ab, which is attributed to intrinsic pinning of vortices between the planes. For Bile the vortex glass line is well described by B-g(T)= B-0[(1 - T/T-c)/(T/T-c)](alpha), where B-0 is anisotropy dependent and alpha approximate to 1.0-1.2. For B \textbackslash\textbackslash ab the behaviour is significantly different, and at high magnetic fields a change to a field-independent vortex solid-to-liquid transition is observed. This behaviour disappears for small misalignments between B and ab.
Place, publisher, year, edition, pages
2000. Vol. 284, no Part. 1, 705-706 p.
intrinsic pinning, oxygen deficiency, YBaCuO, vortex dynamics
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:kth:diva-49985DOI: 10.1016/S0921-4526(99)02400-XISI: 000087311700351OAI: oai:DiVA.org:kth-49985DiVA: diva2:460895
QC 201112012011-12-012011-12-012011-12-02Bibliographically approved