Document
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Continuant
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Entity
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Generically Dependent Continuant
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Physical Review B
publication venue for: Current vortices in aromatic carbon molecules
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type: Journal
type: Collection
type: Periodical
type: Document
type: Continuant
type: Information Content Entity
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type: Generically Dependent Continuant

RDF description of Current vortices in aromatic carbon molecules - http://orbis.uaslp.mx/vivo/individual/scopus6443
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date: 2026-08-27T12:38:06
publisher: vivo
type: Document

Article
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AG100819, IA101618, IA103020
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type: BFO_0000020
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type: Thing
type: Grant
type: Continuant
funding vehicle for: Current vortices in aromatic carbon molecules

Information Content Entity
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Current vortices in aromatic carbon molecules
origen: scopus
has publication venue: Physical Review B
type: Information Content Entity
related by: authorship_41904
abstract: The local current flow through three small aromatic carbon molecules, namely, benzene, naphthalene, and anthracene, is studied. Applying density functional theory and the nonequilibrium Green%27s function method for transport, we demonstrate that pronounced current vortices exist at certain electron energies for these molecules. The intensity of these circular currents, which appear not only at the antiresonances of the transmission but also in the vicinity of its maxima, can exceed the total current flowing through the molecular junction and generate considerable magnetic fields. The π electron system of the molecular junctions is emulated experimentally by a network of macroscopic microwave resonators. The local current flows in these experiments confirm the existence of current vortices as a robust property of ring structures. The circular currents can be understood in terms of a simple nearest-neighbor tight-binding Hückel model. Current vortices are caused by the interplay of the complex eigenstates of the open system which have energies close to the considered electron energy. Degeneracies, as observed in benzene and anthracene, can thus generate strong circular currents, but also nondegenerate systems like naphthalene exhibit current vortices. Small imperfections and perturbations can couple otherwise uncoupled states and induce circular currents. © 2020 American Physical Society.
freetext keyword: Anthracene; Benzene; Carbon; Density functional theory; Dissociation; Electron energy levels; Microwave devices; Microwave resonators; Molecules; Naphthalene; Superconducting materials; Circular current; Current vortices; Electron energies; Electron systems; Molecular junction; Nearest neighbors; Non equilibrium green's function method; Ring structures; Vortex flow
e iscopus: 2-s2.0-85093362988
most specific type: Article
related by: authorship_41907
type: Continuant
type: Generically Dependent Continuant
doi: 10.1103/PhysRevB.102.075405
related by: authorship_41908
has funding vehicle: Consejo Nacional de Ciencia y Tecnología, CONACYT: A1-S-13469, A1-S-18696
artnum: e075405
related by: authorship_41909
accesstype: All Open Access, Green
type: Article
related by: authorship_41902
date time value: article date 6444
type: Document
type: Entity
related by: authorship_41905
type: Thing
crisid: 6444
has funding vehicle: Deutsche Forschungsgemeinschaft, DFG: HE 5675/5-1
issue: 7
has funding vehicle: European Commission, EC: NEMF21
most specific type: Document
volume: 102
has funding vehicle: AG100819, IA101618, IA103020
related by: authorship_41903
related by: authorship_41910
abstract: The local current flow through three small aromatic carbon molecules, namely, benzene, naphthalene, and anthracene, is studied. Applying density functional theory and the nonequilibrium Green's function method for transport, we demonstrate that pronounced current vortices exist at certain electron energies for these molecules. The intensity of these circular currents, which appear not only at the antiresonances of the transmission but also in the vicinity of its maxima, can exceed the total current flowing through the molecular junction and generate considerable magnetic fields. The π electron system of the molecular junctions is emulated experimentally by a network of macroscopic microwave resonators. The local current flows in these experiments confirm the existence of current vortices as a robust property of ring structures. The circular currents can be understood in terms of a simple nearest-neighbor tight-binding Hückel model. Current vortices are caused by the interplay of the complex eigenstates of the open system which have energies close to the considered electron energy. Degeneracies, as observed in benzene and anthracene, can thus generate strong circular currents, but also nondegenerate systems like naphthalene exhibit current vortices. Small imperfections and perturbations can couple otherwise uncoupled states and induce circular currents. © 2020 American Physical Society.
estado: published
related by: authorship_41906

Consejo Nacional de Ciencia y Tecnología, CONACYT: A1-S-13469, A1-S-18696
type: Relationship
type: BFO_0000020
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type: Grant
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funding vehicle for: Current vortices in aromatic carbon molecules

Deutsche Forschungsgemeinschaft, DFG: HE 5675/5-1
type: Relationship
type: BFO_0000020
type: Entity
type: Thing
type: Grant
type: Continuant
funding vehicle for: Current vortices in aromatic carbon molecules

European Commission, EC: NEMF21
type: Relationship
type: BFO_0000020
type: Entity
type: Thing
type: Grant
type: Continuant
funding vehicle for: Current vortices in aromatic carbon molecules