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 language | English |
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Pages (from-to) | 2518-2520 |
Number of pages | 3 |
Journal | Science |
Volume | 294 |
Issue number | 5551 |
DOIs | |
Publication status | Published - Dec 21 2001 |
Externally published | Yes |
ASJC Scopus subject areas
- General