Activation energy of Bi2Sr2Ca1-xErx Cu2O8+d epitaxial thin films

Tzuen Rong Yang, Gheorghe Ilonca, Aurel Pop, G. Ştiufiuc, C. Lung

Research output: Contribution to journalArticle

Abstract

The scaling behavior of the effective activation energy U (T,H) of epitaxial oriented Bi2Sr2Ca1-xErxCu 2O8+d thin films with 0 ≤ x ≤ 0.10 has been studied as function of temperature and magnetic field. It has been found that the activation energy scales as U (H,T) = Uo (1-t)m Hn with exponent m = 1.20±0.03 and n = -1/2. The field and temperature dependence of the activation energy, as well as its overall magnitude, is consistent with a model in which U (T, H) arises from plastic deformations of viscous flux liquid above the vortex-glass transition temperature.

Original languageEnglish
Pages (from-to)539-543
Number of pages5
JournalJournal of Low Temperature Physics
Volume131
Issue number3-4
DOIs
Publication statusPublished - 2003 May

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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