https://doi.org/10.1140/epjb/e2013-31075-7
Regular Article
Geometry-induced quantum dots on surfaces with Gaussian bumps
Unidade Acadêmica de Física, Universidade Federal de Campina
Grande, POB 10071 Campina
Grande, PB
58109-970,
Brazil
a
e-mail: cleversonfilgueiras@yahoo.com.br
Received: 28 November 2012
Received in final form: 14 January 2013
Published online: 10 April 2013
In this work we investigate the two dimensional electron gas on surfaces showing Gaussian bumps. Due to confinement on two dimensional curved space, a geometry-induced potential appears. For surfaces showing single bumps, the geometrical potential gives rise to a geometry-induced quantum ring, as showed in a previous work. For surfaces with multiples bumps, the charge carries may be trapped around the center of these surfaces, which could gives rise to a geometry-induced quantum dot. Our results can be realized on bilayer graphene sheets and we hope that it would lead to new technics of building quantum dots.
Key words: Mesoscopic and Nanoscale Systems
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2013