Published November 1997
| Version v1
Journal article
Topology of the Pseudogap and Shadow Bands in Bi2Sr2CaCu2O8+δ at Optimum Doping
Creators
- 1. Istituto Nazionale di Fisica Nucleare (INFN) and Universita di Roma La Sapienza, P. A. Moro 2, 00185 Roma (Italy)
- 2. LURE, Bat 209D Universite Pairs-Sud, F-91405 Orsay (France)
- 3. Dipartimento di Fisica, Universita di Roma La Sapienza, P.A. Moro 2, 00185 Roma (Italy)
- 4. LURE and Instituto de Ciencia de Materials de Madrid, CSIC, 28049 Madrid (Spain)
- 5. Superconductivity Research Laboratory, ISTEC, Shinonome 1-10-13 Koto -ku, Tokyo 135 (Japan)
Description
We report topology of the Fermi surface of Bi2Sr2CaCu2O8+δ superconducting system at the optimum doping determined by sequential angle-scanning photoemission combined with high intensity of synchrotron radiation. The Fermi surface at the optimum doping has a pseudogap around (π,0) as in underdoped samples, showing missing segments near the M points, and shadow bands around (0.5π,0.5π) and equivalent locations. The k dependence of the pseudogap shows a particular asymmetric topology that imposes a strong constraint on its theoretical explanation. copyright 1997 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 79
- Journal Issue
- 18
- Journal Page Range
- p. 3467-3470.
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 29020602
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BISMUTH OXIDES; CALCIUM OXIDES; COPPER OXIDES; CRYSTAL DOPING; ELECTRONIC STRUCTURE; ENERGY GAP; FERMI LEVEL; HIGH-TC SUPERCONDUCTORS; PHOTOEMISSION; STRONTIUM OXIDES; SYNCHROTRON RADIATION
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BISMUTH COMPOUNDS; BREMSSTRAHLUNG; CALCIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTROMAGNETIC RADIATION; EMISSION; ENERGY LEVELS; OXIDES; OXYGEN COMPOUNDS; RADIATIONS; SECONDARY EMISSION; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS