Quantum-mechanical interference in charge exchange between hydrogen and graphene-like surfaces

Autores
Romero, Marcelo Ariel; Iglesias Garcia, Adalberto de Jesus; Goldberg, Edith Catalina
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The neutral to negative charge fluctuation of a hydrogen atom in front of a graphene surface is calculated by using the Anderson model within an infinite intra atomic Coulomb repulsion approximation. We perform an ab initio calculation of the Anderson hybridization function that allows investigation of the effect of quantum-mechanical interference related to the Berry phase inherent to the graphene band structure. We find that consideration of the interaction of hydrogen on top of many C atoms leads to a marked asymmetry of the imaginary part of the hybridization function with respect to the Fermi level. Consequently, Fano factors larger than one and strongly dependent on the energy around the Fermi level are predicted. Moreover, the suppression of the hybridization for energies above the Fermi level can explain the unexpected large negative ion formation measured in the scattering of protons by graphite-like surfaces.
Fil: Romero, Marcelo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Iglesias Garcia, Adalberto de Jesus. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Goldberg, Edith Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química; Argentina
Materia
Quantum Interference
Charge Exchange
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/10914
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Quantum-mechanical interference in charge exchange between hydrogen and graphene-like surfacesRomero, Marcelo ArielIglesias Garcia, Adalberto de JesusGoldberg, Edith CatalinaQuantum InterferenceCharge Exchangehttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The neutral to negative charge fluctuation of a hydrogen atom in front of a graphene surface is calculated by using the Anderson model within an infinite intra atomic Coulomb repulsion approximation. We perform an ab initio calculation of the Anderson hybridization function that allows investigation of the effect of quantum-mechanical interference related to the Berry phase inherent to the graphene band structure. We find that consideration of the interaction of hydrogen on top of many C atoms leads to a marked asymmetry of the imaginary part of the hybridization function with respect to the Fermi level. Consequently, Fano factors larger than one and strongly dependent on the energy around the Fermi level are predicted. Moreover, the suppression of the hybridization for energies above the Fermi level can explain the unexpected large negative ion formation measured in the scattering of protons by graphite-like surfaces.Fil: Romero, Marcelo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); ArgentinaFil: Iglesias Garcia, Adalberto de Jesus. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); ArgentinaFil: Goldberg, Edith Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química; ArgentinaIop Publishing2012-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/10914Romero, Marcelo Ariel; Iglesias Garcia, Adalberto de Jesus; Goldberg, Edith Catalina; Quantum-mechanical interference in charge exchange between hydrogen and graphene-like surfaces; Iop Publishing; Journal Of Physics: Condensed Matter; 24; 1-2012; 45004-450130953-8984enginfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/0953-8984/24/4/045004/info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-8984/24/4/045004info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:01:38Zoai:ri.conicet.gov.ar:11336/10914instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:01:38.978CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Quantum-mechanical interference in charge exchange between hydrogen and graphene-like surfaces
title Quantum-mechanical interference in charge exchange between hydrogen and graphene-like surfaces
spellingShingle Quantum-mechanical interference in charge exchange between hydrogen and graphene-like surfaces
Romero, Marcelo Ariel
Quantum Interference
Charge Exchange
title_short Quantum-mechanical interference in charge exchange between hydrogen and graphene-like surfaces
title_full Quantum-mechanical interference in charge exchange between hydrogen and graphene-like surfaces
title_fullStr Quantum-mechanical interference in charge exchange between hydrogen and graphene-like surfaces
title_full_unstemmed Quantum-mechanical interference in charge exchange between hydrogen and graphene-like surfaces
title_sort Quantum-mechanical interference in charge exchange between hydrogen and graphene-like surfaces
dc.creator.none.fl_str_mv Romero, Marcelo Ariel
Iglesias Garcia, Adalberto de Jesus
Goldberg, Edith Catalina
author Romero, Marcelo Ariel
author_facet Romero, Marcelo Ariel
Iglesias Garcia, Adalberto de Jesus
Goldberg, Edith Catalina
author_role author
author2 Iglesias Garcia, Adalberto de Jesus
Goldberg, Edith Catalina
author2_role author
author
dc.subject.none.fl_str_mv Quantum Interference
Charge Exchange
topic Quantum Interference
Charge Exchange
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The neutral to negative charge fluctuation of a hydrogen atom in front of a graphene surface is calculated by using the Anderson model within an infinite intra atomic Coulomb repulsion approximation. We perform an ab initio calculation of the Anderson hybridization function that allows investigation of the effect of quantum-mechanical interference related to the Berry phase inherent to the graphene band structure. We find that consideration of the interaction of hydrogen on top of many C atoms leads to a marked asymmetry of the imaginary part of the hybridization function with respect to the Fermi level. Consequently, Fano factors larger than one and strongly dependent on the energy around the Fermi level are predicted. Moreover, the suppression of the hybridization for energies above the Fermi level can explain the unexpected large negative ion formation measured in the scattering of protons by graphite-like surfaces.
Fil: Romero, Marcelo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Iglesias Garcia, Adalberto de Jesus. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Goldberg, Edith Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química; Argentina
description The neutral to negative charge fluctuation of a hydrogen atom in front of a graphene surface is calculated by using the Anderson model within an infinite intra atomic Coulomb repulsion approximation. We perform an ab initio calculation of the Anderson hybridization function that allows investigation of the effect of quantum-mechanical interference related to the Berry phase inherent to the graphene band structure. We find that consideration of the interaction of hydrogen on top of many C atoms leads to a marked asymmetry of the imaginary part of the hybridization function with respect to the Fermi level. Consequently, Fano factors larger than one and strongly dependent on the energy around the Fermi level are predicted. Moreover, the suppression of the hybridization for energies above the Fermi level can explain the unexpected large negative ion formation measured in the scattering of protons by graphite-like surfaces.
publishDate 2012
dc.date.none.fl_str_mv 2012-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/10914
Romero, Marcelo Ariel; Iglesias Garcia, Adalberto de Jesus; Goldberg, Edith Catalina; Quantum-mechanical interference in charge exchange between hydrogen and graphene-like surfaces; Iop Publishing; Journal Of Physics: Condensed Matter; 24; 1-2012; 45004-45013
0953-8984
url http://hdl.handle.net/11336/10914
identifier_str_mv Romero, Marcelo Ariel; Iglesias Garcia, Adalberto de Jesus; Goldberg, Edith Catalina; Quantum-mechanical interference in charge exchange between hydrogen and graphene-like surfaces; Iop Publishing; Journal Of Physics: Condensed Matter; 24; 1-2012; 45004-45013
0953-8984
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/0953-8984/24/4/045004/
info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-8984/24/4/045004
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Iop Publishing
publisher.none.fl_str_mv Iop Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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