Enhancement of thermopower in the high Tc superconductor YBa2Cu3O7 and related compounds

Srinivasan, R. ; Sankaranarayanan, V. ; Raju, N. P. ; Natarajan, S. ; Varadaraju, U. V. ; Subba Rao, G. V. (1987) Enhancement of thermopower in the high Tc superconductor YBa2Cu3O7 and related compounds Pramana - Journal of Physics, 29 (2). L225-L230. ISSN 0304-4289

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Official URL: http://www.ias.ac.in/j_archive/pramana/29/2/225-23...

Related URL: http://dx.doi.org/10.1007/BF02845730

Abstract

The absolute thermopower of single phase YBa2Cu3O7 and Y0.8Er0.2Ba2Cu3O7 has been measured in the range 250 K to the superconducting transition temperature. It is found that these compounds show a large enhancement of thermopower in the range 150 K down to Tc. This enhancement shows a steep exponential drop as the temperature increases from the transition temperature. The temperature variation of the enhancement is too steep to be accounted for by electron-phonon or electron-local structural excitation mechanisms.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:High Temperature Superconductors; Enhancement In Thermoelectric Power
ID Code:57928
Deposited On:30 Aug 2011 09:04
Last Modified:18 May 2016 09:09

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