Magnetically-induced reconstructions of the ground state in a few-electron Si quantum dot
Mesoscale and Nanoscale Physics
2009-11-07 v1
Abstract
We report unexpected fluctuations in the positions of Coulomb blockade peaks at high magnetic fields in a small Si quantum dot. The fluctuations have a distinctive saw-tooth pattern: as a function of magnetic field, linear shifts of peak positions are compensated by abrupt jumps in the opposite direction. The linear shifts have large slopes, suggesting formation of the ground state with a non-zero angular momentum. The value of the momentum is found to be well defined, despite the absence of the rotational symmetry in the dot.
Keywords
Cite
@article{arxiv.cond-mat/0108210,
title = {Magnetically-induced reconstructions of the ground state in a few-electron Si quantum dot},
author = {L. P. Rokhinson and L. J. Guo and S. Y. Chou and D. C. Tsui},
journal= {arXiv preprint arXiv:cond-mat/0108210},
year = {2009}
}
Comments
5 pages, 4 figures, accepted to PRL