Quasiparticle energy dispersion in doped two-dimensional quantum antiferromagnets
- Research Center in Superconductivity, University of Cambridge, Madingley Road, Cambridge CB3 0HE (United Kingdom)
The quasiparticle dispersion in the one-hole {ital t}-{ital t}{prime}-{ital t} {double_prime}-{ital J} model is studied. Both finite-size diagonalization and the self-consistent Born-approximation calculations have been performed and compared. The quasiparticle band structures in the hole- and electron-doped high-{ital T}{sub {ital c}} cuprates are qualitatively different. In the hole-doped compounds, the band maxima are located at ({plus_minus}{pi}/2,{plus_minus}{pi}/2), while in the electron-doped compounds the band maxima are located at ({pi},0) and its equivalent points. The angle-resolved photoemission data for the quasiparticle dispersion of Sr{sub 2}CuO{sub 2}Cl{sub 2} can be quantitatively reproduced using the one-band {ital t}-{ital t}{prime}-{ital t} {double_prime}-{ital J} model with the three-site hopping term. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 389352
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 54, Issue 18; Other Information: PBD: Nov 1996
- Country of Publication:
- United States
- Language:
- English
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