Spectral properties of the planar t-J model
Phys. Rev. B 55, 7307 (1997) The single-particle spectral functions $A({\bf k},\omega)$ and self-energies $\Sigma({\bf k},\omega)$ are calculated within the $t-J$ model using the finite-temperature Lanczos method for small systems. A remarkable asymmetry between the electron and hole part is found....
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Main Authors | , |
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Format | Journal Article |
Language | English |
Published |
19.07.1996
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Subjects | |
Online Access | Get full text |
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Summary: | Phys. Rev. B 55, 7307 (1997) The single-particle spectral functions $A({\bf k},\omega)$ and self-energies
$\Sigma({\bf k},\omega)$ are calculated within the $t-J$ model using the
finite-temperature Lanczos method for small systems. A remarkable asymmetry
between the electron and hole part is found. The hole (photoemission) spectra
are overdamped, with ${\rm Im} \Sigma \propto \omega$ in a wide energy range,
consistent with the marginal Fermi liquid scenario, and in good agreement with
experiments on cuprates. In contrast, the quasiparticles in the electron part
of the spectrum show weak damping. |
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Bibliography: | IJS-TP/96-15 |
DOI: | 10.48550/arxiv.cond-mat/9607140 |