Length-scale-dependent phase transition in Bi2Sr 2CaCu2O8 single crystals

K. Vad, S. Mészáros, I. Nándori, B. Sas

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Electrical transport measurements using a multi-terminal configuration are presented, which prove that in Bi2Sr2CaCu 2O8 single crystals near the transition temperature in zero external magnetic field the secondary voltage is induced by thermally activated vortex loop unbinding. The phase transition between the bound and unbound states of the vortex loops was found to be below the temperature where the phase coherence of the superconducting order parameter extends over the whole volume of the sample. We show experimentally that 3D-2D phase transition in vortex dimensionality is a length-scale-dependent layer decoupling process and lakes place simultaneously with the 3D-2D phase transition in superconductivity at the same temperature.

Original languageEnglish
Pages (from-to)2115-2123
Number of pages9
JournalPhilosophical Magazine
Volume86
Issue number13-14
DOIs
Publication statusPublished - May 1 2006

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vortices
single crystals
phase coherence
lakes
decoupling
superconductivity
transition temperature
temperature
electric potential
configurations
magnetic fields
Phase Transition
Temperature
Crystal
Length
Superconductivity
Layer

ASJC Scopus subject areas

  • Philosophy

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Length-scale-dependent phase transition in Bi2Sr 2CaCu2O8 single crystals. / Vad, K.; Mészáros, S.; Nándori, I.; Sas, B.

In: Philosophical Magazine, Vol. 86, No. 13-14, 01.05.2006, p. 2115-2123.

Research output: Contribution to journalArticle

Vad, K. ; Mészáros, S. ; Nándori, I. ; Sas, B. / Length-scale-dependent phase transition in Bi2Sr 2CaCu2O8 single crystals. In: Philosophical Magazine. 2006 ; Vol. 86, No. 13-14. pp. 2115-2123.
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