Rapid suppression of the superconducting gap in overdoped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}

Journal Article · Sun Dec 01 00:00:00 EST 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.R15669· OSTI ID:399849

White, P J ^[1]; Shen, Z ^[1]; Kim, C ^[2]; Harris, J M; Loeser, A G; Fournier, P; Kapitulnik, A ^[1]

---

1. Department of Applied Physics, Stanford University, Stanford, California 94305 (United States)
2. Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305 (United States)

Angle-resolved photoemission experiments have been performed on overdoped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}. With a modest {ital T}{sub {ital c}} reduction of about 10{percent}, the size of the superconducting gap decreases by about 35{percent}. The rapid suppression of the superconducting gap is correlated with an almost complete collapse of the normal-state excitation gap and a dramatic evolution of the electronic structure near ({pi},0) with doping. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 399849
• Journal Information: Physical Review, B: Condensed Matter, Vol. 54, Issue 22; Other Information: PBD: Dec 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
PHOTOEMISSION
BISMUTH OXIDES
STRONTIUM OXIDES
CALCIUM OXIDES
COPPER OXIDES
TRANSITION TEMPERATURE
ELECTRONIC STRUCTURE
CHEMICAL COMPOSITION
ANGULAR RESOLUTION