Magnetoelectric coupling on fused azulene oligomers
- Autores
- Valentim, Alexandra; Garcia, Daniel Julio; Plascak, J. A.
- Año de publicación
- 2022
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The global magnetic phase diagram for fused azulene oligomers is obtained by using a fermionic Hubbard model, which is an intermediate between the molecular Pariser-Parr-Pople empiric Hamiltonian and the spin-1/2 antiferromagnetic Heisenberg model. We employ the density matrix renormalization group (DMRG) approach to explore the ground state properties of azulene-like molecules as a function of the electronic correlation and the oligomer size. It is shown that, depending on the length of the oligomer, fused azulene transitions from a singlet (S=0) to a higher-spin (S=1,2) ground state. Near the quantum magnetic phase transition the electric dipole moment, present on fused azulene molecules, couples with the magnetic moment leading to a divergent magnetoelectric susceptibility at the boundary lines of the magnetic phase diagram. These spontaneous electric and magnetic polarizations, together with the magnetoelectric coupling between them, indeed corroborate that these fused azulene oligomers can be viewed as a purely organic multiferroic material, being a magnetoelectric molecule.
Fil: Valentim, Alexandra. Universidade Estadual da Paraiba; Brasil. Universidade Federal de Minas Gerais; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Garcia, Daniel Julio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Plascak, J. A.. University of Georgia; Estados Unidos. Universidade Federal de Minas Gerais; Brasil. Universidade Estadual da Paraiba; Brasil - Materia
-
Magnetic phase transitions
Quantum phase transitions
Molecular magnets - 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:11336/214472
Ver los metadatos del registro completo
id |
CONICETDig_fcb1dce19022dff17ff20df4da602cc8 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/214472 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Magnetoelectric coupling on fused azulene oligomersValentim, AlexandraGarcia, Daniel JulioPlascak, J. A.Magnetic phase transitionsQuantum phase transitionsMolecular magnetshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The global magnetic phase diagram for fused azulene oligomers is obtained by using a fermionic Hubbard model, which is an intermediate between the molecular Pariser-Parr-Pople empiric Hamiltonian and the spin-1/2 antiferromagnetic Heisenberg model. We employ the density matrix renormalization group (DMRG) approach to explore the ground state properties of azulene-like molecules as a function of the electronic correlation and the oligomer size. It is shown that, depending on the length of the oligomer, fused azulene transitions from a singlet (S=0) to a higher-spin (S=1,2) ground state. Near the quantum magnetic phase transition the electric dipole moment, present on fused azulene molecules, couples with the magnetic moment leading to a divergent magnetoelectric susceptibility at the boundary lines of the magnetic phase diagram. These spontaneous electric and magnetic polarizations, together with the magnetoelectric coupling between them, indeed corroborate that these fused azulene oligomers can be viewed as a purely organic multiferroic material, being a magnetoelectric molecule.Fil: Valentim, Alexandra. Universidade Estadual da Paraiba; Brasil. Universidade Federal de Minas Gerais; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Garcia, Daniel Julio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Plascak, J. A.. University of Georgia; Estados Unidos. Universidade Federal de Minas Gerais; Brasil. Universidade Estadual da Paraiba; BrasilAmerican Physical Society2022-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/214472Valentim, Alexandra; Garcia, Daniel Julio; Plascak, J. A.; Magnetoelectric coupling on fused azulene oligomers; American Physical Society; Physical Review B; 105; 17; 5-2022; 1-82469-99502469-9969CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.105.174426info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:56:09Zoai:ri.conicet.gov.ar:11336/214472instacron: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 09:56:09.71CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Magnetoelectric coupling on fused azulene oligomers |
title |
Magnetoelectric coupling on fused azulene oligomers |
spellingShingle |
Magnetoelectric coupling on fused azulene oligomers Valentim, Alexandra Magnetic phase transitions Quantum phase transitions Molecular magnets |
title_short |
Magnetoelectric coupling on fused azulene oligomers |
title_full |
Magnetoelectric coupling on fused azulene oligomers |
title_fullStr |
Magnetoelectric coupling on fused azulene oligomers |
title_full_unstemmed |
Magnetoelectric coupling on fused azulene oligomers |
title_sort |
Magnetoelectric coupling on fused azulene oligomers |
dc.creator.none.fl_str_mv |
Valentim, Alexandra Garcia, Daniel Julio Plascak, J. A. |
author |
Valentim, Alexandra |
author_facet |
Valentim, Alexandra Garcia, Daniel Julio Plascak, J. A. |
author_role |
author |
author2 |
Garcia, Daniel Julio Plascak, J. A. |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Magnetic phase transitions Quantum phase transitions Molecular magnets |
topic |
Magnetic phase transitions Quantum phase transitions Molecular magnets |
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 global magnetic phase diagram for fused azulene oligomers is obtained by using a fermionic Hubbard model, which is an intermediate between the molecular Pariser-Parr-Pople empiric Hamiltonian and the spin-1/2 antiferromagnetic Heisenberg model. We employ the density matrix renormalization group (DMRG) approach to explore the ground state properties of azulene-like molecules as a function of the electronic correlation and the oligomer size. It is shown that, depending on the length of the oligomer, fused azulene transitions from a singlet (S=0) to a higher-spin (S=1,2) ground state. Near the quantum magnetic phase transition the electric dipole moment, present on fused azulene molecules, couples with the magnetic moment leading to a divergent magnetoelectric susceptibility at the boundary lines of the magnetic phase diagram. These spontaneous electric and magnetic polarizations, together with the magnetoelectric coupling between them, indeed corroborate that these fused azulene oligomers can be viewed as a purely organic multiferroic material, being a magnetoelectric molecule. Fil: Valentim, Alexandra. Universidade Estadual da Paraiba; Brasil. Universidade Federal de Minas Gerais; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Garcia, Daniel Julio. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina Fil: Plascak, J. A.. University of Georgia; Estados Unidos. Universidade Federal de Minas Gerais; Brasil. Universidade Estadual da Paraiba; Brasil |
description |
The global magnetic phase diagram for fused azulene oligomers is obtained by using a fermionic Hubbard model, which is an intermediate between the molecular Pariser-Parr-Pople empiric Hamiltonian and the spin-1/2 antiferromagnetic Heisenberg model. We employ the density matrix renormalization group (DMRG) approach to explore the ground state properties of azulene-like molecules as a function of the electronic correlation and the oligomer size. It is shown that, depending on the length of the oligomer, fused azulene transitions from a singlet (S=0) to a higher-spin (S=1,2) ground state. Near the quantum magnetic phase transition the electric dipole moment, present on fused azulene molecules, couples with the magnetic moment leading to a divergent magnetoelectric susceptibility at the boundary lines of the magnetic phase diagram. These spontaneous electric and magnetic polarizations, together with the magnetoelectric coupling between them, indeed corroborate that these fused azulene oligomers can be viewed as a purely organic multiferroic material, being a magnetoelectric molecule. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-05 |
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/11336/214472 Valentim, Alexandra; Garcia, Daniel Julio; Plascak, J. A.; Magnetoelectric coupling on fused azulene oligomers; American Physical Society; Physical Review B; 105; 17; 5-2022; 1-8 2469-9950 2469-9969 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/214472 |
identifier_str_mv |
Valentim, Alexandra; Garcia, Daniel Julio; Plascak, J. A.; Magnetoelectric coupling on fused azulene oligomers; American Physical Society; Physical Review B; 105; 17; 5-2022; 1-8 2469-9950 2469-9969 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.105.174426 |
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 Physical Society |
publisher.none.fl_str_mv |
American Physical 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 |
_version_ |
1842269387441045504 |
score |
13.13397 |