Glassy superconductor state in La1.8Sr.2CuO4 ceramics

L. Leylekian, M. Ocio, M. V. Feigelman, L. B. Ioffe

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2 Citations (Scopus)

Abstract

We study the history-dependence of diamagnetic response of superconducting La1.8Sr.2CuO4 ceramics in a magnetic field. In this material the granulas are weakly coupled by Josephson junctions, and these couplings are frustrated by the magnetic field. We separate the magnetic response due to intergranular Josephson currents and intragranular currents. We find a strong history-dependence of magnetization which is the evidence of the gauge glass state formed in this system at low temperature. Our data are in a qualitative agreement with the developed MF theory of the gauge glass state.

Original languageEnglish
Pages (from-to)2671-2672
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Volume235-240
Issue numberPART 4
DOIs
Publication statusPublished - Dec 1994
Externally publishedYes

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