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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
; | | Date: |
2 Jul 2008 | | 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 extbf{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 $
u = 3$ and
$
u= 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. | | Source: | arXiv, 0807.0297 | | Services: | Forum | Review | PDF | Favorites | |
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