Abstract
We have studied the electronic structure of the superconductor YNi2B2C by photoemission and inverse-photoemission spectroscopy. The spectra show a prominent Ni 3d band centered around 1.5 eV below the Fermi level (EF), whose top crosses EF, and B, C 2sp-derived states at higher binding energies, generally consistent with band-structure calculations. However, the Ni 3d-derived conduction bands are narrower than calculated and are accompanied by a satellite, signaling electron-correlation effects within the d bands. The density-of-states peak at EF predicted by band-structure calculations is suppressed and its spectral weight is transferred away from EF, presumably due to an electron-phonon interaction and/or electron correlation.
Original language | English (US) |
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Pages (from-to) | 9660-9663 |
Number of pages | 4 |
Journal | Physical Review B |
Volume | 50 |
Issue number | 13 |
DOIs | |
State | Published - 1994 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics