Thermal transport and scattering mechanism in BPSCCO high-Tc superconductors in the vortex state

M. Matsukawa, K. Noto, T. Todate, T. Sasaki, J. Ikeda, N. Kobayashi, Y. Yamada, M. Ishihara

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Abstract

The thermal conductivity k{cyrillic} for the c-axis oriented polycrystal of BPSCCO system has been measured between 30K and 140 K in magnetic fields up to 13 T. A clear enhancement of k{cyrillic} just below Tc is remarkably suppressed with increase of an applied field. The scattering mechanism for the thermal transport in the vortex state have been discussed, applying a relaxation time approximation to the phonon transport and Kadanoff's theory to the electron transport. Field dependence of the thermal conductivity k{cyrillic} (H) in the lower-field region is described by an analysis in which the scattering of phonon by the vortex filaments is taken into account. In the higher-field region, k{cyrillic} (H) is fitted by a stretched exponential law proposed by Richardson et al.

Original languageEnglish
Pages (from-to)1507-1508
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume235-240
Issue numberPART 2
DOIs
Publication statusPublished - 1994 Dec

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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