Specific heat and correlation between resistivity and thermoelectric power of GdBa2(Cu1-xMnx)3O7-δ HTSC system for x ≤ 0.02

Bhasker Gahtori, S. K. Agarwal, Tirthankar Chakraborty, Ashok Rao, Y. K. Kuo

Research output: Contribution to journalArticle

5 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)27-29
Number of pages3
JournalPhysica C: Superconductivity and its Applications
Volume469
Issue number1
DOIs
Publication statusPublished - 01-01-2009

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Thermoelectric power
high temperature superconductors
Specific heat
specific heat
electrical resistivity
electronics
Superconducting materials
narrowband
communication
Doping (additives)
Scattering
causes
Communication
scattering

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

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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.",
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Specific heat and correlation between resistivity and thermoelectric power of GdBa2(Cu1-xMnx)3O7-δ HTSC system for x ≤ 0.02. / Gahtori, Bhasker; Agarwal, S. K.; Chakraborty, Tirthankar; Rao, Ashok; Kuo, Y. K.

In: Physica C: Superconductivity and its Applications, Vol. 469, No. 1, 01.01.2009, p. 27-29.

Research output: Contribution to journalArticle

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AU - Gahtori, Bhasker

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AU - Rao, Ashok

AU - Kuo, Y. K.

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