Oscillation modes of two-dimensional nanostructures within the time-dependent local-spin-density approximation
Mesoscale and Nanoscale Physics
2009-10-31 v2
Abstract
We apply the time-dependent local-spin-density approximation as general theory to describe ground states and spin-density oscillations in the linear response regime of two-dimensional nanostructures of arbitrary shape. For this purpose, a frequency analysis of the simulated real-time evolution is performed. The effect on the response of the recently proposed spin-density waves in the ground state of certain parabolic quantum dots is considered. They lead to the prediction of a new class of excitations, soft spin-twist modes, with energies well below that of the spin dipole oscillation.
Cite
@article{arxiv.cond-mat/9905288,
title = {Oscillation modes of two-dimensional nanostructures within the time-dependent local-spin-density approximation},
author = {Antonio Puente and Llorens Serra},
journal= {arXiv preprint arXiv:cond-mat/9905288},
year = {2009}
}
Comments
4 RevTex pages and 4 GIF figures, accepted in PRL