Tunable quantum dots in monolayer graphene
arXiv:1205.0114 · doi:10.1103/PhysRevB.85.165446
Abstract
We examine a graphene quantum dot formed by combining an electric and a uniform magnetic field. The electric field creates a smooth quantum well potential while the magnetic field induces an exponential tail to the dot states. The states peak in the well and the electrostatic barrier region as a result of the Klein tunneling effect. Coupling between dot states which peak in different regions can be achieved with the electric and magnetic fields. The tunability of this dot with moderate external fields could be used for designing quantum devices in monolayer graphene.
12 pages, 8 figs
References in corpus (8)
- Ultrahigh electron mobility in suspended graphene
- Chiral tunneling and the Klein paradox in graphene
- Suspended Graphene: a bridge to the Dirac point
- Tunable Coulomb blockade in nanostructured graphene
- Quasi-bound states of quantum dots in single and bilayer graphene
- The Fock-Darwin States of Dirac Electrons in Graphene-based Artificial Atoms
- Spin States in Graphene Quantum Dots
- Magnetic field induced confinement-deconfinement transition in graphene quantum dots
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