Abstract
We present laser-excited ultrahigh-resolution photoemission spectroscopy of YNi2B2C and ErNi2B2C. The extremely high energy resolution enables us to discuss the superconducting (SC) gap function of YNi2B2C and to measure the density of states which is coexisted between superconductivity and antiferromagnetism in ErNi2B2C. For YNi2B2C, s + g-wave SC gap symmetry cannot reproduce the experimental data, implying importance of taking the complicated electronic structures into consideration. For ErNi2B2C, the observed coherent peak is very broad and finite density of state exists at Fermi level.
Original language | English |
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Pages (from-to) | 46-49 |
Number of pages | 4 |
Journal | Physica C: Superconductivity and its applications |
Volume | 445-448 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - Oct 1 2006 |
Keywords
- Anisotropic superconductor
- Antiferromagnetic superconductor
- Photoemission spectroscopy
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering