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  The Role of Fermi Surface Anisotropies in Heavy-Fermion Superconductors

Rauchschwalbe, U., & Steglich, F. (1988). The Role of Fermi Surface Anisotropies in Heavy-Fermion Superconductors. In J. C. Fuggle, & G. A. Sawatzky (Eds.), Narrow-Band Phenomena—Influence of Electrons with Both Band and Localized Character (pp. 39-43). Springer US.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-CFAE-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-CFAF-6
Genre: Book Chapter

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 Creators:
Rauchschwalbe, U.1, Author
Steglich, F.2, Author              
Affiliations:
1external, ou_persistent22              
2External Organizations, ou_persistent22              

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 Abstract: We present evidence that at the superconducting transition temperature Tc of the Heavy-Fermion-Superconductors CeCu2Si2 and Ube13, the order parameter is formed only on part of the Fermi-surface. In UBe13, at least part of the Fermi-surface that does not participate in superconductivity at Tc = 0.9K develops an order parameter in the accessible temperature range, i.e. at 0.55K. The effect can be sharply enhanced by doping UBe13 with a few at% Th, leading to a second phase transition within the superconducting state. In CeCu2Si2, those parts of the Fermi surface which do not participate in superconductivity down to the lowest temperatures carry a small effective mass. The influence of impurities on the Fermi-surface anisotropy is discussed.

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 Dates: 1988-08-08
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1007/978-1-4684-5559-5_6
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Title: Narrow-Band Phenomena—Influence of Electrons with Both Band and Localized Character
Source Genre: Book
 Creator(s):
Fuggle, J. C.1, Editor
Sawatzky, G. A.1, Editor
Allen, J. W.1, Author
Affiliations:
1 external, ou_persistent22            
Publ. Info: Springer US
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 39 - 43 Identifier: -