Spectral properties near the Mott transition in the two-dimensional Hubbard model with next-nearest-neighbor hopping

Article

关键词: COUPLED LUTTINGER LIQUIDS;    CHARGE SUSCEPTIBILITY;    ELECTRONIC-STRUCTURE;    PERTURBATION-THEORY;    CONFINED COHERENCE;    SQUARE-LATTICE;    BAND-STRUCTURE;    FERMI-SURFACE;    SUPERCONDUCTIVITY;    INSULATOR;   

DOI  :  10.1103/PhysRevB.90.035111

来源: SCIE

【 摘 要 】

The single-particle spectral properties near the Mott transition in the two-dimensional Hubbard model with next-nearest-neighbor hopping are investigated by using cluster perturbation theory. Complicated spectral features of this model are simply interpreted, by considering how the next-nearest-neighbor hopping shifts the spectral weights of the two-dimensional Hubbard model. Various anomalous features observed in hole-doped and electron-doped cuprate high-temperature superconductors are explained in a unified manner as properties near the Mott transition in a two-dimensional system whose spectral weights are shifted by next-nearest-neighbor hopping.

【 授权许可】

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