Fermi surface sheet-dependent superconductivity in 2H-NbSe2

Takayoshi Yokoya, T. Kiss, A. Chainani, S. Shin, Minoru Nohara, H. Takagi

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Abstract

High-resolution angle-resolved photoemission spectroscopy was used to study the superconducting energy gap and changes in the spectral function across the superconducting transition in the quasi-two-dimensional superconductor 2H-NbSe2. The momentum dependence of the superconducting gap was determined on different Fermi surface sheets. The results indicate Fermi surface sheet-dependent superconductivity in this low-transition temperature multiband system and provide a description consistent with thermodynamic measurements and the anomalous de Haas-van Alphen oscillations observed in the superconducting phase. The present data suggest the importance of Fermi surface sheet-dependent superconductivity in explaining exotic superconductivity in other multiband systems with complex Fermi surface topology, such as the borides and f-electron superconductors.

Original languageEnglish
Pages (from-to)2518-2520
Number of pages3
JournalScience
Volume294
Issue number5551
DOIs
Publication statusPublished - Dec 21 2001
Externally publishedYes

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Boron Compounds
Photoelectron Spectroscopy
Transition Temperature
Thermodynamics
Superconductivity
Electrons

ASJC Scopus subject areas

  • General

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Fermi surface sheet-dependent superconductivity in 2H-NbSe2. / Yokoya, Takayoshi; Kiss, T.; Chainani, A.; Shin, S.; Nohara, Minoru; Takagi, H.

In: Science, Vol. 294, No. 5551, 21.12.2001, p. 2518-2520.

Research output: Contribution to journalArticle

Yokoya, T, Kiss, T, Chainani, A, Shin, S, Nohara, M & Takagi, H 2001, 'Fermi surface sheet-dependent superconductivity in 2H-NbSe2', Science, vol. 294, no. 5551, pp. 2518-2520. https://doi.org/10.1126/science.1065068
Yokoya, Takayoshi ; Kiss, T. ; Chainani, A. ; Shin, S. ; Nohara, Minoru ; Takagi, H. / Fermi surface sheet-dependent superconductivity in 2H-NbSe2. In: Science. 2001 ; Vol. 294, No. 5551. pp. 2518-2520.
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