Superconductivity in BiS2 based Bi4O4S3 novel compound
IR@NPL: CSIR-National Physical Laboratory, New Delhi
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| Title |
Superconductivity in BiS2 based Bi4O4S3 novel compound
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| Creator |
Singh, Shiva Kumar
Kumar, Anuj -, Shruti Sharma, G. Patnaik, S. Husain, M. Awana, V. P. S. |
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| Subject |
Applied Physics/Condensed Matter
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| Description |
We report here synthesis and basic characterizations of Bi4O4S3 superconductor. The sample is crystallized in tetragonal I4/mmm space group with lattice parameters a = 3.969(2) angstrom, c = 41.352(1) angstrom. Both DC magnetization and resistivity measurements confirmed that Bi4O4S3 is a bulk superconductor with superconducting transition temperature (T-c) of 4.4K. Closed loops in isothermal magnetization (MH) measurements are clear signature of flux pinning and irreversible behavior. The lower critical field (H-c1) is found to be similar to 15 Oe at 2K. The magneto- transport P(T, H) measurements showed resistive broadening and decrease in Tc (P = 0) with increasing magnetic field. Upper critical field calculated through extrapolation H-c2(0) is similar to 31kOe with corresponding Ginzburg-Landau coherence length similar to 100 angstrom. Our magnetization and electrical transport measurements substantiate the appearance of bulk superconductivity in as synthesized Bi4O4S3.
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| Publisher |
AIP Publishing
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| Date |
2013
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://npl.csircentral.net/3020/1/Superconductivity%20in%20BiS2.pdf
Singh, Shiva Kumar and Kumar, Anuj and -, Shruti and Sharma, G. and Patnaik, S. and Husain, M. and Awana, V. P. S. (2013) Superconductivity in BiS2 based Bi4O4S3 novel compound. AIP Conference Proceedings, 1512. pp. 1104-1105. ISSN 0094-243X |
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| Relation |
http://npl.csircentral.net/3020/
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