Gahtori, Bhasker and Agarwal, S. K. and Chakraborty, Tirthankar and Rao, Ashok and Kuo, Y.-K. (2008) Specific heat and correlation between resistivity and thermoelectric power of GdBa2(Cu1-xMnx)(3)O7-delta HTSC system for x <= 0.02. Physica C: Superconductivity, 469 (1). pp. 27-29. ISSN 0921-4534

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Abstract

In this communication we present some theoretical results of specific heat and thermoelectric power of the superconductor GdBa2(Cu1−xMnx)3O7−δ (for x <= 0.02). A model based on separate electronic and phononic contributions is used for the interpretation of the specific heat data while a narrow band model is used for the analysis of thermoelectric power. On the basis of these models two main conclusions have been drawn about the relative effects of different Mn contents: (1) the observed fluctuation effects near Tc whose strength increases with increasing Mn content and (2) Mn produces mainly electronic effects for lower Mn contents, while for higher doping levels (x > 0.0075) Mn predominantly causes carrier-Mn scattering process.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier B.V.
Uncontrolled Keywords:	Specific heat; Residual resistivity; Thermoelectric power
Subjects:	Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	04 Oct 2012 07:58
Last Modified:	04 Oct 2012 07:58
URI:	http://npl.csircentral.net/id/eprint/648

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