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arXiv · 0807.0297

Numerical Studies of Quantum Hall Ferromagnetism in Two-Subband Systems

Xiao-Jie Hao·Tao Tu·Yong-Jie Zhao·Guang-Can Guo·H. W. Jiang·Guo-Ping Guo
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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 $ν= 3$ and $ν= 4$, 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.

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Xiao-Jie Hao, Tao Tu, Yong-Jie Zhao, Guang-Can Guo, H. W. Jiang, Guo-Ping Guo. 2008-07-02. Numerical Studies of Quantum Hall Ferromagnetism in Two-Subband Systems. https://arxiv.org/abs/0807.0297

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