High-Resolution Photoemission Study of the Low-Energy Excitations Reflecting the Superconducting State of Bi-Sr-Ca-Cu-O Single Crystals
J. -M. Imer, F. Patthey, B. Dardel, W. -D. Schneider, Y. Baer, Y. Petroff, A. Zettl
DOI 10.1103/PhysRevLett.62.336 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
uv-photoemission spectra (hν=21.2 eV) of single-crystal specimens of the high-Tc superconductor Bi2Sr2CaCu2O8 have been measured with a resolution of 20 meV in the normal state at 105 K and in the superconducting state at 15 K. In a narrow energy range of 120 meV below the Fermi energy, the low-temperature spectra reveal unambiguously the low-lying quasiparticle excitations reflecting the superconducting state. A straightforward analysis of these spectra provides strong evidence for the existence of a superconducting gap with a reduced value 2ΔkBTc≃8.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 88 | Pressure unresolved | onset |
| Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 88 | Pressure unresolved | onset |
| Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 88 | Pressure unresolved | unknown |
Similar papers
Comment on ‘‘High-resolution photoemission study of the low-energy excitations reflecting the superconducting state of Bi-Sr-Ca-Cu-O single crystals’’
similarity 0.97Y. Sakisaka
Source status unknown — claims are unverified
Superconducting energy gap in Bi1.8Pb0.4Sr2Ca2Cu3O10+δ studied by photoemission spectroscopy
similarity 0.97C. Gu et al.
Source status unknown — claims are unverified
Extraction of normal electron self-energy and pairing self-energy in the superconducting state of the Bi2Sr2CaCu2O8 superconductor via laser-based angle-resolved photoemission
similarity 0.97Wentao Zhang et al.
Source status unknown — claims are unverified
Doping dependence of the O 1s core-level photoemission in Bi-Sr-Ca-Cu-O superconductors
similarity 0.97M. Qvarford et al.
Source status unknown — claims are unverified
Valence-band and core-level photoemission study of single-crystal Bi2CaSr2Cu2 O8 superconductors
similarity 0.97Z. -X. Shen et al.
Source status unknown — claims are unverified
Direct observation of particle-hole mixing in the superconducting state by angle-resolved photoemission
similarity 0.97J. C. Campuzano et al.
Source status unknown — claims are unverified