Abstract-Terahertz transitions in Aharonov-Bohm quantum rings in an external electric field

http://onlinelibrary.wiley.com/doi/10.1002/pssc.201100198/abstract

Magneto-oscillations of the electric dipole moment are predicted and analyzed for a single-electron nanoscale ring pierced by a magnetic flux (an Aharonov-Bohm ring) and subjected to an electric field in the ring's plane.

These oscillations are accompanied by periodic changes in the selection rules for inter-level optical transitions in the ring allowing control of polarization properties of the associated terahertz radiation. (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)