Open Quantum Dots in Graphene: Scaling Relativistic Pointer States

D. K. Ferry, L. Huang, R. Yang, Y-C Lai, R. Akis, Ying-Cheng Lai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Citations (Scopus)

Abstract

Open quantum dots provide a window into the connection between quantum and classical physics, particularly through the decoherence theory, in which an important set of quantum states are not "washed out" through interaction with the environment-the pointer states provide connection to trapped classical orbits which remain stable in the dots. Graphene is a recently discovered material with highly unusual properties. This single layer, one atom thick, sheet of carbon has a unique bandstructure, governed by the Dirac equation, in which charge carriers imitate relativistic particles with zero rest mass. Here, an atomic orbital-based recursive Green's function method is used for studying the quantum transport. We study quantum fluctuations in graphene and bilayer graphene quantum dots with this recursive Green's function method. Finally, we examine the scaling of the domiant fluctuation frequency with dot size.

Original languageEnglish
Title of host publicationProgress in Nonequilibrium Green's Functions IV
EditorsM Bonitz, K Balzer
Place of PublicationBristol
PublisherIOP Publishing Ltd.
Number of pages14
DOIs
Publication statusPublished - 2010
EventConference on Progress in Nonequilibrium Green's Functions IV - Glasgow
Duration: 17 Aug 200921 Aug 2009

Conference

ConferenceConference on Progress in Nonequilibrium Green's Functions IV
CityGlasgow
Period17/08/0921/08/09

Keywords

  • conductivity
  • einselection
  • transition
  • transport
  • cavities
  • single

Cite this

Ferry, D. K., Huang, L., Yang, R., Lai, Y-C., Akis, R., & Lai, Y-C. (2010). Open Quantum Dots in Graphene: Scaling Relativistic Pointer States. In M. Bonitz, & K. Balzer (Eds.), Progress in Nonequilibrium Green's Functions IV IOP Publishing Ltd.. https://doi.org/10.1088/1742-6596/220/1/012015