Magnetic field and temperature dependence of thermal activated dissipation in epitaxial thin films of Bi2Sr2Ca(Cu1-xCox) 2Od superconductors

G. Ilonca, V. Toma, Tzuen-Rong Yang, A. V. Pop, P. Balint, M. Bodea, E. Macocian

研究成果: 雜誌貢獻期刊論文同行評審

3 引文 斯高帕斯(Scopus)

摘要

The scaling behavior of the effective activation energy of high-quality epitaxial c-oriented Bi2Sr2Ca(Cu1-xCox) 2Od thin films with 0 ≤ x ≥ 0.025 has been studied as a function of temperature and magnetic field. For all samples, the effective activation energy scales as U(T, μ0H) = U0(1-T/Tc)mHn with exponent m = 1.25 ± 0.03, n = -1/2 and the field scaling 1/μ0H and -Uμ0H for thick films and ultra thin films, respectively. The results are discussed taking account of the influence of the Co substitution with a model in which U(T, H) arises from plastic deformations of the viscous flux liquid above the vortex-glass transition temperature.

原文英語
頁(從 - 到)369-371
頁數3
期刊Physica C: Superconductivity and its Applications
460-462 I
發行號SPEC. ISS.
DOIs
出版狀態已發佈 - 2007 九月 1

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學
  • 能源工程與電力技術
  • 電氣與電子工程

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