Exciton Storage in a Nanoscale Aharonov-Bohm Ring with Electric Field Tuning

Andrea M. Fischer, Vivaldo L. Campo, Jr., Mikhail E. Portnoi, and Rudolf A. Römer
Phys. Rev. Lett. 102, 096405 – Published 4 March 2009

Abstract

We study analytically the optical properties of a simple model for an electron-hole pair on a ring subjected to perpendicular magnetic flux and in-plane electric field. We show how to tune this excitonic system from optically active to optically dark as a function of these external fields. Our results offer a simple mechanism for exciton storage and readout.

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  • Received 22 September 2008

DOI:https://doi.org/10.1103/PhysRevLett.102.096405

©2009 American Physical Society

Authors & Affiliations

Andrea M. Fischer1, Vivaldo L. Campo, Jr.2, Mikhail E. Portnoi3, and Rudolf A. Römer1

  • 1Department of Physics and Centre for Scientific Computing, University of Warwick, Coventry, CV4 7AL, United Kingdom
  • 2Departmento de Fisica, Universidade Federal de São Carlos–UFSCar, 13565-905 São Carlos, SP, Brazil
  • 3School of Physics, University of Exeter, Exeter EX4 4QL, United Kingdom

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Issue

Vol. 102, Iss. 9 — 6 March 2009

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