Bilayer splitting in the electronic structure of heavily overdoped Bi2Sr2CaCu2O8+delta

Authors
Feng, DL Armitage, NP Lu, DH Damascelli, A Hu, JP Bogdanov, P Lanzara, A Ronning, F Shen, KM Eisaki, H Kim, C Shen, ZX Shimoyama, JI Kishio, K
Citation
Dl. Feng et al., Bilayer splitting in the electronic structure of heavily overdoped Bi2Sr2CaCu2O8+delta, PHYS REV L, 86(24), 2001, pp. 5550-5553
Citations number
17
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
86
Issue
24
Year of publication
2001
Pages
5550 - 5553
Database
ISI
SICI code
0031-9007(20010611)86:24<5550:BSITES>2.0.ZU;2-Q
Abstract
The electronic structure of heavily overdoped Bi2Sr2CaCu2O8+delta is invest igated by angle-resolved photoemission spectroscopy. The long-sought bilaye r band splitting in this two-plane system is observed in both normal and su perconducting states, which qualitatively agrees with the bilayer Hubbard m odel calculations. The maximum bilayer energy splitting is about 88 meV for the normal state feature, while it is only about 20 meV for the supercondu cting peak.