Commensurability Effects in Hexagonal Antidot Lattices with Large Antidot Diameters
Mesoscale and Nanoscale Physics
2009-11-11 v2
Abstract
The observation of a novel type of commensurability resonance in two-dimensional, hexagonal antidot lattices is reported. These resonances have a classical character and occur at magnetic fields above the resonance that corresponds to the cyclotron motion around a single antidot. The resonances are visible only for antidots with effective diameters larger than 50 % of the lattice constant. Simulations reveal that they originate from quasi-stable electron trajectories that bounce between three neighboring antidots. This interpretation is backed by the observation of large-period Aharonov-Bohm type oscillations at low temperatures.
Keywords
Cite
@article{arxiv.cond-mat/0502237,
title = {Commensurability Effects in Hexagonal Antidot Lattices with Large Antidot Diameters},
author = {S. Meckler and T. Heinzel and A. Cavanna and G. Faini and U. Gennser and D. Mailly},
journal= {arXiv preprint arXiv:cond-mat/0502237},
year = {2009}
}
Comments
5 pages, 5 figures minor changes to text