Role of alternance symmetry in magnetoconductance
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Título
Role of alternance symmetry in magnetoconductanceFecha de publicación
2014Editor
American Physical SocietyISSN
1098-0121; 1550-235XTipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://journals.aps.org/prb/pdf/10.1103/PhysRevB.89.155428Versión
info:eu-repo/semantics/publishedVersionResumen
We show that the direction of coherent electron transport across a cyclic system of quantum dots or a cyclic
molecule can be modulated by an external magnetic field if the cycle has an odd number of hopping sites, ... [+]
We show that the direction of coherent electron transport across a cyclic system of quantum dots or a cyclic
molecule can be modulated by an external magnetic field if the cycle has an odd number of hopping sites, but
the transport becomes completely symmetric if the number is even. These contrasting behaviors, which remain
in the case of interacting electrons, are a consequence of the absence or presence of alternance symmetry in the
system. These findings are relevant for the design of nanocircuits based on coupled quantum dots or molecular
junctions. [-]
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PHYSICAL REVIEW B 89, 155428 (2014)Derechos de acceso
©2014 American Physical Society
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