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Título:
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Spectral weight function for the half-filled Hubbard-model: a singular-value decomposition approach
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Autores:
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Creffield, Charles E. ;
Klepfish, E. G. ;
Pike, E. R. ;
Sarkar, Sarben
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Tipo de documento:
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texto impreso
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Editorial:
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American Physical Society, 1995-07-17
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física de materiales
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Tipo = Artículo
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Resumen:
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The singular value decomposition technique is used to reconstruct the electronic spectral weight function for a half-filled Hubbard model with on-site repulsion U = 4t from quantum Monte Carlo data. A two-band structure for the single-particle excitation spectrum is found to persist as the lattice size exceeds the spin-spin correlation length. The observed bands are flat in the vicinity of the (0, ?), (?, 0) points in the Brillouin zone, in accordance with experimental data for high-temperature superconducting compounds.
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En línea:
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https://eprints.ucm.es/37475/1/Creffield%20C%2031%20LIBRE.pdf
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