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Author

V. Sankaranarayanan

Bio: V. Sankaranarayanan is an academic researcher from Indian Department of Atomic Energy. The author has contributed to research in topic(s): Thermal conductivity & Thermal conduction. The author has co-authored 2 publication(s).

Papers
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TL;DR: In this article, a modified BRT type analysis points to an increase in point defects and planar defects in YBa 2 Cu 3 O 7−y (YBCO) samples.
Abstract: Significant reduction in the magnitude of thermal conductivity of a sample of YBa 2 Cu 3 O 7−y (YBCO) has been observed when the sample was stored in dry air for a period of one year, though it was reoxygenated to restore superconductivity. A modified BRT type analysis points to an increase in point defects and planar defects.
Journal ArticleDOI
TL;DR: In this paper, the phonon part of the thermal conductivity of a series of well characterized samples of YBa 2 Cu 3−x Zn x O 7−y has been measured.
Abstract: Thermal conductivity of a series of well characterized samples of YBa 2 Cu 3−x Zn x O 7−y has been measured. The phonon part of the thermal conductivity has been fitted to a modified BRT type expression. The fit parameters, among other things, indicate that the gap parameter 2/k B Tc and the electron-phonon coupling strength decrease with increasing zinc concentration in the sample.