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dc.contributor.author
Hallberg, Karen Astrid
dc.contributor.author
Jimenez Rincon, Jose Julian
dc.contributor.author
Ramasesha, S.
dc.date.available
2021-02-04T17:54:36Z
dc.date.issued
2010-10
dc.identifier.citation
Hallberg, Karen Astrid; Jimenez Rincon, Jose Julian; Ramasesha, S.; Quantum properties in transport through nanoscopic rings: Charge-spin separation and interference effects; World Scientific; International Journal of Modern Physics B; 24; 25-26; 10-2010; 5068-5078
dc.identifier.issn
0217-9792
dc.identifier.uri
http://hdl.handle.net/11336/124827
dc.description.abstract
Many of the most intriguing quantum effects are observed or could be measured in transport experiments through nanoscopic systems such as quantum dots, wires and rings formed by large molecules or arrays of quantum dots. In particular, the separation of charge and spin degrees of freedom and interference effects have important consequences in the conductivity through these systems. Charge-spin separation was predicted theoretically in one-dimensional strongly interacting systems (Luttinger liquids) and, although observed indirectly in several materials formed by chains of correlated electrons, it still lacks direct observation. We present results on transport properties through Aharonov-Bohm rings (pierced by a magnetic flux) with one or more channels represented by paradigmatic strongly-correlated models. For a wide range of parameters we observe characteristic dips in the conductance as a function of magnetic flux which are a signature of spin and charge separation. Interference effects could also be controlled in certain molecules and interesting properties could be observed. We analyze transport properties of conjugated molecules, benzene in particular, and find that the conductance depends on the lead configuration. In molecules with translational symmetry, the conductance can be controlled by breaking or restoring this symmetry, e.g. by the application of a local external potential. These results open the possibility of observing these peculiar physical properties in anisotropic ladder systems and in real nanoscopic and molecular devices.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
World Scientific
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CHARGE-SPIN SEPARATION
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QUANTUM INTERFERENCE
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STRONG CORRELATIONS
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Física de los Materiales Condensados
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Quantum properties in transport through nanoscopic rings: Charge-spin separation and interference effects
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-01-27T19:17:45Z
dc.journal.volume
24
dc.journal.number
25-26
dc.journal.pagination
5068-5078
dc.journal.pais
Singapur
dc.description.fil
Fil: Hallberg, Karen Astrid. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
dc.description.fil
Fil: Jimenez Rincon, Jose Julian. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
dc.description.fil
Fil: Ramasesha, S.. Indian Institute of Science; India
dc.journal.title
International Journal of Modern Physics B
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.worldscientific.com/doi/abs/10.1142/S0217979210057213
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1142/S0217979210057213
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