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Disordered nanocrystalline superconducting PbMo6S8 with a very large upper critical field

Niu, H.J.; Hampshire, D.P.

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Authors

H.J. Niu

D.P. Hampshire



Abstract

Large increases in the upper critical field B-C2(0) are reported in bulk superconductors that demonstrate another novel property for nanocrystalline materials. Disordered nanocrystalline PbMo6S8 superconductors were fabricated by mechanical milling and hot isostatic pressing. Conventional PbMo6S8 has B-C2(0)similar to50 T. The nanocrystalline materials have higher resistivity (rho(N)) and B-C2(0)similar to100 T. The disorder produced in these nanocrystalline materials is significantly different from that produced by doping because it increases rho(N) and, hence, B-C2(0) without significantly reducing the electronic density of states or superconducting transition temperature (T-C). Furthermore, the disorder reduces the electron mean-free path to similar to1 nm which is more than an order of magnitude smaller than the grain size and necessary to achieve the unprecedented increase in B-C2(0).

Citation

Niu, H., & Hampshire, D. (2003). Disordered nanocrystalline superconducting PbMo6S8 with a very large upper critical field. Physical Review Letters, 91(2), https://doi.org/10.1103/physrevlett.91.027002

Journal Article Type Article
Publication Date 2003-07
Deposit Date Nov 27, 2006
Publicly Available Date Mar 29, 2024
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 91
Issue 2
DOI https://doi.org/10.1103/physrevlett.91.027002
Keywords Critical-current-density, NB, Temperatures, Parameters, NB3SN, Films, Spins, Heat.

Files

Published Journal Article (460 Kb)
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Copyright Statement
© 2003 by The American Physical Society. All rights reserved.




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