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Título:
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Feshbach-type resonances for two-particle scattering in graphene
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Autores:
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Gaul, C. ;
Domínguez-Adame Acosta, Francisco ;
Sols Lucía, Fernando ;
Zapata, I.
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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, 2014-01-21
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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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Two-particle scattering in graphene is a multichannel problem, where the energies of the identical or opposite-helicity channels lie in disjoint energy segments. Due to the absence of Galilean invariance, these segments depend on the total momentum Q. The dispersion relations for the two opposite-helicity scattering channels are analogous to those of two one-dimensional tight-binding lattices with opposite dispersion relations, which are known to easily bind states at their edges. When an s-wave separable interaction potential is assumed, those bound states reveal themselves as three Feshbach resonances in the identical-helicity channel. In the limit Q -> 0, one of the resonances survives and the opposite-helicity scattering amplitudes vanish.
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En línea:
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https://eprints.ucm.es/id/eprint/26470/1/Sols%2C%20F%2003libre.pdf
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