Anomalous Valley Magnetic Moment of Graphene
Strongly Correlated Electrons
2010-12-17 v1 Other Condensed Matter
Abstract
Carrier interactions on graphene are studied. The study shows that besides the well known Coulomb repulsion between carriers, there also exist four-fermion interactions associated with U-process, one of which attracts carriers in different valleys. We then calculate the contributions to valley magnetic moment from vertex correction and from four-fermion corrections explicitly. The relative contributions are -18% and 3% respectively. At last we point out that we can mimic heavy quarkonium system by carrier interactions in graphene.
Keywords
Cite
@article{arxiv.1003.0111,
title = {Anomalous Valley Magnetic Moment of Graphene},
author = {Daqing Liu and Shengli Zhang and Erhu Zhang and Ning Ma and Huawei Chen},
journal= {arXiv preprint arXiv:1003.0111},
year = {2010}
}
Comments
6 pages, 2 figures