Experimental evidence of quantum tunneling of 2D vortices up to 10 K in bulk Tl2Ba2Ca2Cu3O10 superconductor

Xixiang Zhang*, A. García, J. Tejada, Y. Xin, K. W. Wong

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Low-temperature magnetic relaxation measurements have been performed in a sintered Tl2Ba2Ca2Cu3O10 bulk high-Tc superconductor, with an applied magnetic field of 50 Oe. A temperature-independent normalized magnetic relaxation rate below 10 K is observed. The transition from the thermally activated vortex motion regime to the quantum tunneling regime is found to be very sharp, indicating the absence of dissipation in this magnetic field. The observed behaviour is explained in terms of single 2D vortex motion in the Cu-O layers.

Original languageEnglish (US)
Pages (from-to)99-103
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume232
Issue number1-2
DOIs
StatePublished - Oct 15 1994

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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