H.J. Niu
Disordered nanocrystalline superconducting PbMo6S8 with a very large upper critical field
Niu, H.J.; Hampshire, D.P.
Authors
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. |
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