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Scaling of the vortex-liquid resistivity in optimally doped and oxygen-deficient YBa2Cu3O7-delta single crystals
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT. (Fasta tillståndets fysik)ORCID iD: 0000-0002-9858-6235
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT. (Fasta tillståndets fysik)
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT. (Fasta tillståndets fysik)
2001 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 63, no 18, 1845111-1845119 p.Article in journal (Refereed) Published
Abstract [en]

The consequences of a recently proposed model [A. Rydh. O. Rapp. and M. Andersson. Phys. Rev. Lett. 83. 1850 (1999)] for the vortex-liquid resistivity close to a vortex liquid-to-glass transition are anal-zed in detail. We find a detailed quantitative agreement between the model and resistivity measurements on disordered, optimally doped YBa2Cu3O7-delta single crystals. For temperatures below the superconducting transition temperature. a scaling of all measured resistivity curves in magnetic field (0<B12 T) is obtained. Possible ways of slightly modifying the model in order to fully describe resistivity measurements on more anisotropic underdoped oxygen-deficient YBa2Cu3O7-delta single crystals are suggested. The physical interpretation of the model and its connection to other models of the vortex-liquid resistivity are discussed. in particular, we find close connections to vortex glass models and to a generalized Coulomb gas model.

Place, publisher, year, edition, pages
2001. Vol. 63, no 18, 1845111-1845119 p.
Keyword [en]
lattice-melting transition, high-tc superconductors, high-temperature superconductors, flux-line-lattice, ba-cu-o, coulomb-gas, dimensional crossover, phase-transitions, glass resistivity, thin-films
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-20633ISI: 000168730200098OAI: oai:DiVA.org:kth-20633DiVA: diva2:339329
Note
QC 20100525 QC 20111205Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Andersson, Magnus

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