The classification of superconductors using muon spin rotation

In this paper we explore the role of muon spin rotation (μSR) techniques in the characterization and classification of superconducting materials. In particular we focus upon the Uemura classification scheme which considers the correlation between the superconducting transition temperature,Tc, and th...

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Bibliographic Details
Published in:Applied magnetic resonance 1997-07, Vol.13 (1-2), p.95-109
Main Authors: Hillier, A. D., Cywinski, R.
Format: Article
Language:English
Subjects:
Carrier density
Classification
Classification schemes
Cuprates
Fermions
Muon spin rotation
Organic superconductors
Penetration depth
Superconductivity
Transition temperature
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Summary:In this paper we explore the role of muon spin rotation (μSR) techniques in the characterization and classification of superconducting materials. In particular we focus upon the Uemura classification scheme which considers the correlation between the superconducting transition temperature,Tc, and the effective Fermi temperature,TF, determined from μSR measurements of the penetration depth. Within this scheme strongly correlated “exotic” superconductors, i.e, hightTC cuprates, heavy fermions, Chevrel phases and the organic superconductors, form a common but distinct group, characterized by a universal scaling ofTC withTF such that 1/100 >1/340 can be definitively classified as either “exttic” or “conventional”, but instead the compounds display behavior which interpolates between the two regimes.
ISSN:0937-9347
1613-7507
DOI:10.1007/BF03161973