Vortex dynamics in oxygen deficient single crystals of YBa2Cu3O7-delta
1997 (English)In: Physica. C, Superconductivity, ISSN 0921-4534, Vol. 282, 1959-1960 p.Article in journal (Refereed) Published
In YBa2Cu3O7-delta (YBCO), oxygen deficiencies in the CuO chains change the coupling between the charge carriers in adjacent superconducting CuO2 planes and thereby the electrical anisotropy, gamma=(m(c)/m(ab))(1/2). Such crystals therefore provide a simple test system for systematic studies of the influence of anisotropy on vortex dynamics. We have studied the vortex glass transition of YBCO single crystals with delta in the range of 0.07 to 0.27, corresponding to gamma between 9 and 18, for magnetic fields 0<B<12 T, along the c-axis. Fits of the glass transition lines to B proportional to (1-T/T-c)(alpha) show large deviations for a combination of high anisotropy and high magnetic fields.
Place, publisher, year, edition, pages
1997. Vol. 282, 1959-1960 p.
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:kth:diva-49994DOI: 10.1016/S0921-4534(97)01048-4ISI: A1997YA41700009OAI: oai:DiVA.org:kth-49994DiVA: diva2:460881