Dec, 2001
Fermi surface sheet-dependent superconductivity in 2H-NbSe2
SCIENCE
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- Volume
- 294
- Number
- 5551
- First page
- 2518
- Last page
- 2520
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1126/science.1065068
- Publisher
- AMER ASSOC ADVANCEMENT SCIENCE
High-resolution angle-resolved photoemission spectroscopy was used to study the superconducting energy gap and changes in the spectra[ 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.
- Link information
- ID information
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- DOI : 10.1126/science.1065068
- ISSN : 0036-8075
- Web of Science ID : WOS:000172927700049