Wavepacket revivals in monolayer and bilayer graphene rings

We have studied the existence of quantum revivals in graphene quantum rings within a simplified model. The time evolution of a Gaussian-populated wavepacket shows revivals in monolayer and bilayer graphene rings. We have also studied this behavior for quantum rings in a perpendicular magnetic field....

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2013-06, Vol.25 (23), p.235301-235301
Main Authors: García, Trinidad, Rodríguez-Bolívar, Salvador, Cordero, Nicolás A, Romera, Elvira
Format: Article
Language:English
Subjects:
Breaking
Condensed matter
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron states and collective excitations in thin films, multilayers, quantum wells, mesoscopic and nanoscale systems
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Evolution
Exact sciences and technology
Graphene
Magnetic fields
Monolayers
Physics
Thin films and multilayers
Valleys
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Summary:We have studied the existence of quantum revivals in graphene quantum rings within a simplified model. The time evolution of a Gaussian-populated wavepacket shows revivals in monolayer and bilayer graphene rings. We have also studied this behavior for quantum rings in a perpendicular magnetic field. We have found that revival time is an observable that shows different values for monolayer and bilayer graphene quantum rings. In addition, the revival time shows valley degeneracy breaking.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/25/23/235301