Superconductivity at 5K in NdO0.5F0.5BiS2
IR@NPL: CSIR-National Physical Laboratory, New Delhi
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| Title |
Superconductivity at 5K in NdO0.5F0.5BiS2
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| Creator |
Jha, Rajveer
Kumar, Anuj Singh, Shiva Kumar Awana, V. P. S. |
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| Subject |
Applied Physics/Condensed Matter
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| Description |
We report appearance of superconductivity at 5K in NdO0.5F0.5BiS2 and supplement the discovery [Demura et al., e-print arXiv:1207.5248] of the same in layered sulfide based compound. Detailed structural analysis showed that the studied compound is crystallized in tetragonal P4/nmm space group with lattice parameters a = 3.9911(3) angstrom and c = 13.3830(2) angstrom. Bulk superconductivity is established in NdO0.5F0.5BiS2 at 5K by both transport and magnetic measurements. Electrical transport measurements showed superconducting T-c onset at 5.2K and T-c (rho = 0) at 4.7K. Under applied magnetic field, both T-c onset and T-c (rho = 0) decrease to lower temperatures and an upper critical field [H-c2(0)] of above 23 kOe is estimated. Isothermal magnetization exhibited typical type-II behavior with lower critical field (H-c1) of around 25 Oe. Specific heat [C-p(T)] is investigated in the temperature range of 1.9-50K in zero external magnetic field. A Schottky-type anomaly is observed at low temperature below 7K.
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| Publisher |
American Institute of Physics
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| Date |
2013-02-07
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://npl.csircentral.net/3021/1/Superconductivity%20at%205K.pdf
Jha, Rajveer and Kumar, Anuj and Singh, Shiva Kumar and Awana, V. P. S. (2013) Superconductivity at 5K in NdO0.5F0.5BiS2. Journal of Applied Physics , 113 (5). 056102-1-056102-3. ISSN 0021-8979 |
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| Relation |
http://npl.csircentral.net/3021/
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