FeCoCp3 Molecular Magnets as Spin Filters

Autores
Abufager, Paula Natalia; Robles, R.; Lorente, N.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Metallorganic molecules have been proposed as excellent spin filters in molecular spintronics because of the large spin polarization of their electronic structure. However, most of the studies involving spin transport have disregarded fundamental aspects such as the magnetic anisotropy of the molecule and the excitation of spin-flip processes during electron transport. Here, we study a molecule containing a Co and an Fe atom stacked between three cyclopentadienyl rings, which presents a large magnetic anisotropy and a S = 1. These figures are superior to other molecules with the same transition metal and improves the spin-filtering capacities of the molecule. Nonequilibrium Green’s functions calculations based on density functional theory predict excellent spin-filtering properties both in tunnel and contact transport regimes. However, exciting the first magnetic state drastically reduces the current’s spin polarization. Furthermore, a difference of temperature between electrodes leads to strong thermoelectric effects that also suppress spin polarization. Our study shows that in principle good molecular candidates for spintronics need to be confronted with inelastic and thermoelectric effects.
Fil: Abufager, Paula Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); Argentina. Institut Catala de Nanociencia i Nanotecnologia; España
Fil: Robles, R.. Institut Catala de Nanociencia i Nanotecnologia; España
Fil: Lorente, N.. Institut Catala de Nanociencia i Nanotecnologia; España. Consejo Superior de Investigaciones Científicas. Centro de Física de Materiales; España. Donostia International Physics Center; España
Materia
Spin
Molecules
Filters
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:11336/6153

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spelling FeCoCp3 Molecular Magnets as Spin FiltersAbufager, Paula NataliaRobles, R.Lorente, N.SpinMoleculesFiltershttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Metallorganic molecules have been proposed as excellent spin filters in molecular spintronics because of the large spin polarization of their electronic structure. However, most of the studies involving spin transport have disregarded fundamental aspects such as the magnetic anisotropy of the molecule and the excitation of spin-flip processes during electron transport. Here, we study a molecule containing a Co and an Fe atom stacked between three cyclopentadienyl rings, which presents a large magnetic anisotropy and a S = 1. These figures are superior to other molecules with the same transition metal and improves the spin-filtering capacities of the molecule. Nonequilibrium Green’s functions calculations based on density functional theory predict excellent spin-filtering properties both in tunnel and contact transport regimes. However, exciting the first magnetic state drastically reduces the current’s spin polarization. Furthermore, a difference of temperature between electrodes leads to strong thermoelectric effects that also suppress spin polarization. Our study shows that in principle good molecular candidates for spintronics need to be confronted with inelastic and thermoelectric effects.Fil: Abufager, Paula Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); Argentina. Institut Catala de Nanociencia i Nanotecnologia; EspañaFil: Robles, R.. Institut Catala de Nanociencia i Nanotecnologia; EspañaFil: Lorente, N.. Institut Catala de Nanociencia i Nanotecnologia; España. Consejo Superior de Investigaciones Científicas. Centro de Física de Materiales; España. Donostia International Physics Center; EspañaAmerican Chemical Society2015-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/6153Abufager, Paula Natalia; Robles, R.; Lorente, N.; FeCoCp3 Molecular Magnets as Spin Filters; American Chemical Society; Journal Of Physical Chemistry C; 119; 22; 5-2015; 12119–121291932-7447enginfo:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.5b01839info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jpcc.5b01839info:eu-repo/semantics/altIdentifier/arxiv/1504.07282v1info:eu-repo/semantics/altIdentifier/url/http://arxiv.org/abs/1504.07282v1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:32:35Zoai:ri.conicet.gov.ar:11336/6153instacron: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:34982025-09-29 10:32:35.399CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv FeCoCp3 Molecular Magnets as Spin Filters
title FeCoCp3 Molecular Magnets as Spin Filters
spellingShingle FeCoCp3 Molecular Magnets as Spin Filters
Abufager, Paula Natalia
Spin
Molecules
Filters
title_short FeCoCp3 Molecular Magnets as Spin Filters
title_full FeCoCp3 Molecular Magnets as Spin Filters
title_fullStr FeCoCp3 Molecular Magnets as Spin Filters
title_full_unstemmed FeCoCp3 Molecular Magnets as Spin Filters
title_sort FeCoCp3 Molecular Magnets as Spin Filters
dc.creator.none.fl_str_mv Abufager, Paula Natalia
Robles, R.
Lorente, N.
author Abufager, Paula Natalia
author_facet Abufager, Paula Natalia
Robles, R.
Lorente, N.
author_role author
author2 Robles, R.
Lorente, N.
author2_role author
author
dc.subject.none.fl_str_mv Spin
Molecules
Filters
topic Spin
Molecules
Filters
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Metallorganic molecules have been proposed as excellent spin filters in molecular spintronics because of the large spin polarization of their electronic structure. However, most of the studies involving spin transport have disregarded fundamental aspects such as the magnetic anisotropy of the molecule and the excitation of spin-flip processes during electron transport. Here, we study a molecule containing a Co and an Fe atom stacked between three cyclopentadienyl rings, which presents a large magnetic anisotropy and a S = 1. These figures are superior to other molecules with the same transition metal and improves the spin-filtering capacities of the molecule. Nonequilibrium Green’s functions calculations based on density functional theory predict excellent spin-filtering properties both in tunnel and contact transport regimes. However, exciting the first magnetic state drastically reduces the current’s spin polarization. Furthermore, a difference of temperature between electrodes leads to strong thermoelectric effects that also suppress spin polarization. Our study shows that in principle good molecular candidates for spintronics need to be confronted with inelastic and thermoelectric effects.
Fil: Abufager, Paula Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Física de Rosario (i); Argentina. Institut Catala de Nanociencia i Nanotecnologia; España
Fil: Robles, R.. Institut Catala de Nanociencia i Nanotecnologia; España
Fil: Lorente, N.. Institut Catala de Nanociencia i Nanotecnologia; España. Consejo Superior de Investigaciones Científicas. Centro de Física de Materiales; España. Donostia International Physics Center; España
description Metallorganic molecules have been proposed as excellent spin filters in molecular spintronics because of the large spin polarization of their electronic structure. However, most of the studies involving spin transport have disregarded fundamental aspects such as the magnetic anisotropy of the molecule and the excitation of spin-flip processes during electron transport. Here, we study a molecule containing a Co and an Fe atom stacked between three cyclopentadienyl rings, which presents a large magnetic anisotropy and a S = 1. These figures are superior to other molecules with the same transition metal and improves the spin-filtering capacities of the molecule. Nonequilibrium Green’s functions calculations based on density functional theory predict excellent spin-filtering properties both in tunnel and contact transport regimes. However, exciting the first magnetic state drastically reduces the current’s spin polarization. Furthermore, a difference of temperature between electrodes leads to strong thermoelectric effects that also suppress spin polarization. Our study shows that in principle good molecular candidates for spintronics need to be confronted with inelastic and thermoelectric effects.
publishDate 2015
dc.date.none.fl_str_mv 2015-05
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/11336/6153
Abufager, Paula Natalia; Robles, R.; Lorente, N.; FeCoCp3 Molecular Magnets as Spin Filters; American Chemical Society; Journal Of Physical Chemistry C; 119; 22; 5-2015; 12119–12129
1932-7447
url http://hdl.handle.net/11336/6153
identifier_str_mv Abufager, Paula Natalia; Robles, R.; Lorente, N.; FeCoCp3 Molecular Magnets as Spin Filters; American Chemical Society; Journal Of Physical Chemistry C; 119; 22; 5-2015; 12119–12129
1932-7447
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.5b01839
info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jpcc.5b01839
info:eu-repo/semantics/altIdentifier/arxiv/1504.07282v1
info:eu-repo/semantics/altIdentifier/url/http://arxiv.org/abs/1504.07282v1
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 American Chemical Society
publisher.none.fl_str_mv American Chemical Society
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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