Doping-dependent quasiparticle band structure in cuprate superconductors

Journal Article · Sat Feb 01 04:00:00 EST 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.55.R3414· OSTI ID:450410

Eder, R ^[1]; Ohta, Y ^[2]; Sawatzky, G A ^[1]

---

1. Department of Applied and Solid State Physics, University of Groningen, 9747 AG Groningen (The Netherlands)
2. Department of Physics, Chiba University, Chiba 263 (Japan)

We present an exact diagonalization study of the single-particle spectral function in the so-called t-t{sup {prime}}-t{sup {prime}{prime}}-J model in two dimensions. As a key result, we find that hole doping leads to a major reconstruction of the quasiparticle band structure near ({pi},0): whereas for the undoped system the quasiparticle states near ({pi},0) are deep below the top of the band near ({pi}/2,{pi}/2), hole doping shifts these states up to E{sub F}, resulting in extended flat band regions close to E{sub F} and around ({pi},0). {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 450410
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 6 Vol. 55; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BAND THEORY
CUPRATES
DISPERSION RELATIONS
ELECTRONIC STRUCTURE
HIGH-TC SUPERCONDUCTORS
PHOTOEMISSION
QUASI PARTICLES
SPECTRAL FUNCTIONS