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dc.contributor.author
Escudero, Federico Nahuel
dc.contributor.author
Ardenghi, Juan Sebastian
dc.date.available
2022-02-18T02:41:41Z
dc.date.issued
2021-09
dc.identifier.citation
Escudero, Federico Nahuel; Ardenghi, Juan Sebastian; Fermi velocity reduction in graphene due to enhanced vacuum fluctuations; IOP Publishing; Journal of Physics: Condensed Matter; 33; 48; 9-2021; 1-12
dc.identifier.issn
0953-8984
dc.identifier.uri
http://hdl.handle.net/11336/152250
dc.description.abstract
It is well known that the confinement of matter inside a microcavity can significantly enhance the light-matter interactions. As a result the vacuum fluctuations, induced by virtual photons, can occur in a volume much lower than the free-space diffraction limit. In this work we show that, for a single doped graphene plane inside a microcavity, these enhanced vacuum interactions can produce a significant reduction in the Fermi velocity of the electrons. The effect arises because the energies of the photons are much larger than the energies of the electrons in graphene, which implies that the vacuum exchange interaction is repulsive around the Fermi level. Consequently the quasiparticle Fermi velocity decreases, in contrast with the enhancement obtained in Hartree-Fock. For THz cavities, the reduction is highly localized around the Fermi level, and is practically independent of the carrier density in graphene.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
IOP Publishing
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
FERMI VELOCITY
dc.subject
GRAPHENE
dc.subject
MICROCAVITY
dc.subject
VACUUM FLUCTUATIONS
dc.subject.classification
Física de los Materiales Condensados
dc.subject.classification
Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Fermi velocity reduction in graphene due to enhanced vacuum fluctuations
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-12-03T19:24:51Z
dc.journal.volume
33
dc.journal.number
48
dc.journal.pagination
1-12
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Escudero, Federico Nahuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Universidad Nacional del Sur. Departamento de Física; Argentina
dc.description.fil
Fil: Ardenghi, Juan Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina. Universidad Nacional del Sur. Departamento de Física; Argentina
dc.journal.title
Journal of Physics: Condensed Matter
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/1361-648X/ac2535
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1088/1361-648X/ac2535
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