Canted ground state in artificial molecules at high magnetic fields
Mesoscale and Nanoscale Physics
2009-10-31 v1
Abstract
We analyze the transitions that a magnetic field provokes in the ground state of an artificial homonuclear diatomic molecule. For that purpose, we have performed numerical diagonalizations for a double quantum dot around the regime of filling factor 2. We present phase diagrams in terms of tunneling and Zeeman couplings, and confinement strength. We identify a series of transitions from ferromagnetic to symmetric states through a set of canted states with antiferromagnetic couping between the two quantum dots.
Cite
@article{arxiv.cond-mat/0006294,
title = {Canted ground state in artificial molecules at high magnetic fields},
author = {L. Martin-Moreno and L. Brey and C. Tejedor},
journal= {arXiv preprint arXiv:cond-mat/0006294},
year = {2009}
}