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Single-Particle Spectrum in the Electron-Doped Cuprates

Hiroaki Kusunose·T. M. Rice
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Abstract

We study the evolution of the single-particle spectrum with electron doping in a scheme which adds multiple exchange of transverse spin excitations to the mean-field antiferromagnetic insulator. Away from half-filling small Fermi surface pockets appear first around the X-points, and simultaneously new spectral weight grows in the insulating gap. With further doping the in-gap states develop the character of a renormalized quasiparticle band near the chemical potential. The essential features in momentum-energy space agree well with recent studies using angle-resolved photoemission spectroscopy on electron-doped cuprates. We interpret the origins and the nature of the in-gap states using a simple variational wavefunction.

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Hiroaki Kusunose, T. M. Rice. 2003-09-05. Single-Particle Spectrum in the Electron-Doped Cuprates. https://doi.org/10.1103/physrevlett.91.186407

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