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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/6153
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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 |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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