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Superconductivity at 4.4 K in PdTe2 Chains of a Ta-Based Compound

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Abstract

Superconductivity in PdTe2 heavy transition metal-based compounds is a rapidly developing field in condensed matter physics community. Here, we report superconductivity in a nominal ternary telluride Ta2Pd0.97Te6 compound, which is synthesized in sealed evacuated quartz ampoule. The resultant compound is crystallized in layered monoclinic Ta4Pd3Te16 phase with space group C2/m, having lattice parameters a = 21.304(6)Å, b = 3.7365(7)Å and c = 17.7330Å with β = 120.65(1)∘. Both transport and magnetic measurements demonstrated bulk superconductivity at 4.4 K in studied polycrystalline sample. The metallic normal state conductivity can be well ascribed to Fermi liquid behaviour. The superconducting upper critical field of the compound is determined to be 5.5 T based on magnetoresistivity measurements.

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Acknowledgments

Authors would like to thank their Director NPL India for his interest in the present work. This research work is financially supported under DAE-SRC outstanding investigator award scheme on search for new superconductors.

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Authors and Affiliations

  1. CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi, 110012, India

    Reena Goyal, Brajesh Tiwari, Rajveer Jha & V. P. S Awana

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  1. Reena Goyal
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  2. Brajesh Tiwari
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  3. Rajveer Jha
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  4. V. P. S Awana
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Correspondence to V. P. S Awana.

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Goyal, R., Tiwari, B., Jha, R. et al. Superconductivity at 4.4 K in PdTe2 Chains of a Ta-Based Compound. J Supercond Nov Magn 28, 1195–1198 (2015). https://doi.org/10.1007/s10948-014-2935-z

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  • DOI: https://doi.org/10.1007/s10948-014-2935-z

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