Electrical and thermal transport properties of EuBa2(Cu 1-xMnx)3O7-δ

Ashok Rao, Anirban Das, Tirthankar Chakraborty, Bhasker Gahtori, S. K. Agarwal, Chandan Kumar Sarkar, K. M. Sivakumar, K. K. Wu, Y. K. Kuo

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Abstract

In this communication, we present the measurements of electrical resistivity (ρ), thermal conductivity (κ), thermopower (S), and specific heat (CP) on Mn doped compounds EuBa2(Cu 1-xMnx)3O7-δ for 0≤x≤0.02. The transition temperature TC and the upper critical field HC2(0) in this series of compounds are found to decrease quasi-linearly as the Mn concentration increases. All the currently investigated samples show a hump in thermal conductivity below their transition temperatures. Thermopower measurements exhibit an electron-like behaviour for pure samples; however, a hole-like behaviour is seen in all the doped samples. A small jump in specific heat is observed in the pure samples. It is seen that replacing 0.5% Cu by Mn has little effect on the transition temperature, but there is a nearly twofold suppression in the CP jump for this sample. These results demonstrate that the impurities are being incorporated as a whole and not as a cluster.

Original languageEnglish
Article number485212
JournalJournal of Physics Condensed Matter
Volume20
Issue number48
DOIs
Publication statusPublished - 03-12-2008

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Thermoelectric power
Transport properties
Superconducting transition temperature
Specific heat
Thermal conductivity
transport properties
transition temperature
Impurities
thermal conductivity
Electrons
specific heat
Communication
communication
Hot Temperature
retarding
impurities
electrical resistivity
electrons

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Rao, A., Das, A., Chakraborty, T., Gahtori, B., Agarwal, S. K., Sarkar, C. K., ... Kuo, Y. K. (2008). Electrical and thermal transport properties of EuBa2(Cu 1-xMnx)3O7-δ. Journal of Physics Condensed Matter, 20(48), [485212]. https://doi.org/10.1088/0953-8984/20/48/485212
Rao, Ashok ; Das, Anirban ; Chakraborty, Tirthankar ; Gahtori, Bhasker ; Agarwal, S. K. ; Sarkar, Chandan Kumar ; Sivakumar, K. M. ; Wu, K. K. ; Kuo, Y. K. / Electrical and thermal transport properties of EuBa2(Cu 1-xMnx)3O7-δ. In: Journal of Physics Condensed Matter. 2008 ; Vol. 20, No. 48.
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Rao, A, Das, A, Chakraborty, T, Gahtori, B, Agarwal, SK, Sarkar, CK, Sivakumar, KM, Wu, KK & Kuo, YK 2008, 'Electrical and thermal transport properties of EuBa2(Cu 1-xMnx)3O7-δ', Journal of Physics Condensed Matter, vol. 20, no. 48, 485212. https://doi.org/10.1088/0953-8984/20/48/485212

Electrical and thermal transport properties of EuBa2(Cu 1-xMnx)3O7-δ. / Rao, Ashok; Das, Anirban; Chakraborty, Tirthankar; Gahtori, Bhasker; Agarwal, S. K.; Sarkar, Chandan Kumar; Sivakumar, K. M.; Wu, K. K.; Kuo, Y. K.

In: Journal of Physics Condensed Matter, Vol. 20, No. 48, 485212, 03.12.2008.

Research output: Contribution to journalArticle

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AU - Sarkar, Chandan Kumar

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AU - Kuo, Y. K.

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