Numerical Studies of Quantum Hall Ferromagnetism in Two-Subband Systems
Abstract
We carry out a numerical study of the quantum Hall ferromagnetism in a two-subband system using a set of experimental parameters in a recently experiment [X. C. Zhang, I. Martin, and H. W. Jiang, Phys. Rev. B \textbf{74}, 073301 (2006)]. Employing the self-consistence local density approximation for growth direction wave function and the Hartree-Fock theory for the pseudospin anisotropy energy, we are able to account for the easy-axis and easy-plane quantum Hall ferromagnetism observed at total filling factor and , respectively. Our study provides some insight of how the anisotropy energy, which highly depends upon the distribution of growth direction wave functions, determines the symmetry of the quantum Hall ferromagnets.
Cite
@article{arxiv.0807.0297,
title = {Numerical Studies of Quantum Hall Ferromagnetism in Two-Subband Systems},
author = {Xiao-Jie Hao and Tao Tu and Yong-Jie Zhao and Guang-Can Guo and H. W. Jiang and Guo-Ping Guo},
journal= {arXiv preprint arXiv:0807.0297},
year = {2010}
}
Comments
8 pages, 4 figures