First-order melting transition observed from resistivity measurements in ultra-pure YBa2Cu3O7-delta single crystals with high twin boundary density
1999 (English)In: Physica. C, Superconductivity, ISSN 0921-4534, Vol. 322, no 3-4, 203-208 p.Article in journal (Refereed) Published
R(T) measurements have been performed on optimally and overdoped heavily twinned high-purity YBa2Cu3O7-delta single crystals, under a magnetic field B oriented parallel to the twin boundary planes (B parallel to c). The characteristic feature attributed to the flux line lattice melting transition has been observed in the overdoped case for B greater than or equal to 5 T. The first-order transition was not found in the optimally doped sample, even when B was tilted with respect to the c-axis. Differences between these samples are discussed.
Place, publisher, year, edition, pages
1999. Vol. 322, no 3-4, 203-208 p.
flux pinning; magneto-resistance; melting transition
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:kth:diva-49990DOI: 10.1016/S0921-4534(99)00405-0ISI: 000083210400009OAI: oai:DiVA.org:kth-49990DiVA: diva2:460886
QC 201112062011-12-012011-12-012011-12-06Bibliographically approved