Characterization of Bernstein modes in quantum dots
Mesoscale and Nanoscale Physics
2009-11-07 v1
Abstract
The dipole modes of non-parabolic quantum dots are studied by means of their current and density patterns as well as with their local absorption distribution. The anticrossing of the so-called Bernstein modes originates from the coupling with electron-hole excitations of the two Landau bands which are occupied at the corresponding magnetic fields. Non-quadratic terms in the potential cause an energy separation between bulk and edge current modes in the anticrossing region. On a local scale the fragmented peaks absorb energy in complementary spatial regions which evolve with the magnetic field.
Cite
@article{arxiv.cond-mat/0205345,
title = {Characterization of Bernstein modes in quantum dots},
author = {Manuel Valin-Rodriguez and Antonio Puente and Llorens Serra and Vidar Gudmundsson and Andrei Manolescu},
journal= {arXiv preprint arXiv:cond-mat/0205345},
year = {2009}
}
Comments
6 pages; embedded figs. 1-3; figs. 4, 5 separate files; accepted in EPJ-B