Electrostatic quantum dot confinement in phosphorene
Mesoscale and Nanoscale Physics
2020-06-25 v2
Abstract
We consider states localized by electrostatic potentials in phosphorene using an atomistic tight binding approach. From the results of the tight-binding calculations of the confined states we extract effective masses for the conduction band electrons in the armchair and zigzag directions. The masses derived in this way are used for a simple single-band effective mass model which, as we find, reproduces very well the tight-binding energy spectrum in external magnetic field, the probability densities and the interaction effects. Both methods produce Wigner crystallization for the ground-state of the electron pair with the single-electron islands separated in the armchair direction already for small quantum dots.
Cite
@article{arxiv.2003.06677,
title = {Electrostatic quantum dot confinement in phosphorene},
author = {B. Szafran},
journal= {arXiv preprint arXiv:2003.06677},
year = {2020}
}