Volume 94, Number 4, May 2011
|Number of page(s)
|Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
|04 May 2011
Transport response of carbon-based resonant cavities under time-dependent potential and magnetic fields
Institute for Materials Science and Max Bergmannn Center of Biomaterials, Dresden University of Technology D-01062 Dresden, Germany, EU
2 Departamento de Física, Universidad Federico Santa María - Valparaíso, Chile
3 IFEG (CONICET) and FaMAF, Universidad Nacional de Córdoba, Ciudad Universitaria 5000 Córdoba, Argentina
4 Instituto de Física, Universidade Federal Fluminense s/n - 24210-340 Niterói-RJ, Brazil
Accepted: 6 April 2011
Here we report theoretical transport calculations on carbon-based nanomaterials used as resonator cavities under the effects of a time-dependent field. A magnetic field is considered as an extra modulator tool, able to encode binary ON or OFF transmission states on the quantum systems. Regular either complex conductance Fabry-Pérot patterns mapped onto gate vs. bias voltage diagrams can be revealed depending on the set of parameters used on the simulations (amplitude and frequency of the ac field and magnetic-field intensity). We discuss the interplay between the effects on the resonant cavity conductance, caused by the presence of an ac gate plate, which tends to delocalize the electronic wave functions, and an external magnetic field that oppositely localizes the electrons.
PACS: 72.80.Vp – Electronic transport in graphene / 73.23.-b – Electronic transport in mesoscopic systems
© EPLA, 2011
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