Theory of the waterfall phenomenon in cuprate superconductors

Article

关键词: T-J MODEL;    INSULATING COPPER-OXIDE;    2-DIMENSIONAL HUBBARD-MODEL;    ENERGY-FUNCTIONAL APPROACH;    SPIN POLARONS;    QUANTUM ANTIFERROMAGNET;    SPECTRAL WEIGHT;    HOLE;    SR2CUO2CL2;    STATES;   

DOI  :  10.1103/PhysRevB.83.165124

来源: SCIE

【 摘 要 】

Based on exact diagonalization and variational cluster approximation calculations we study the relationship between charge transfer models and the corresponding single band Hubbard models. We present an explanation for the waterfall phenomenon observed in angle resolved photoemission spectroscopy on cuprate superconductors. The phenomenon is due to the destructive interference between the phases of the O2p orbitals belonging to a given Zhang-Rice singlet and the Bloch phases of the photohole which occurs in certain regions of k space. It therefore may be viewed as a direct experimental visualization of the Zhang-Rice construction of an effective single band model for the CuO(2) plane.

【 授权许可】

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