Anomalous magnetization in single-crystal Tl2Ba2CuO6: Evidence of dimensional crossover

F. Zuo, S. Khizroev, G. C. Alexandrakis, V. N. Kopylov

Research output: Contribution to journalArticle

46 Scopus citations

Abstract

Magnetization as a function of field parallel to the c axis shows an anomalous secondary peak for a single-crystal Tl2Ba2CuO6. The peak disappears above a crossover temperature Tcr, which is correlated with a crossover in the irreversibility line Hrev(T). For TTcr, Hrev(T)(1-T/Tc)n with n=3/2; for T<Tcr, Hrev(T) increases with 1/T exponentially, an indication of melting of two-dimensional (2D) vortices. Combined with magnetic-relaxation measurements at T<Tcr, we suggest the anomalous magnetization in this system is due to dimensional crossover from 3D to 2D vortex structure.

Original languageEnglish (US)
Pages (from-to)R755-R758
JournalPhysical Review B
Volume52
Issue number2
DOIs
StatePublished - Jan 1 1995

ASJC Scopus subject areas

  • Condensed Matter Physics

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