Abstract
A large anisotropy of superconducting energy gap in Bi2Sr2CaCu2O8 was directly observed by high-energy resolution angle-resolved photoemission spectroscopy with a high-quality twin-free single crystal. The superconducting gap (Δ) observed in the ΓM direction is 17-19 meV while that in the ΓX (or ΓY) direction is 0-2 meV, suggesting the dx2-y2 superconducting order parameter.
Original language | English |
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Pages (from-to) | 1013-1014 |
Number of pages | 2 |
Journal | Physica C: Superconductivity and its applications |
Volume | 235-240 |
Issue number | PART 2 |
DOIs | |
Publication status | Published - Dec 1994 |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering