Correlations between electronic energy bands spin splitting and magnetic profile symmetry of magnetic superlattice |
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| Authors: | Huaizhe Xu |
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| Institution: | aDepartment of Physics, Beihang University, P.O. Box 912, Beijing 100083, PR China;bKey Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, P. O. Box 912, Beijing 100083, P. R. China |
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| Abstract: | We have theoretically investigated the energy band structures of two typical magnetic superlattices formed by perpendicular or parallel magnetization ferromagnetic stripes periodically deposited on a two-dimensional electron gas (2DEG), where the magnetic profile in the perpendicular magnetization is of inversion anti-symmetry, but of inversion symmetry in parallel magnetization, respectively. We have shown that the energy bands of perpendicular magnetization display the spin-splitting and transverse wave-vector symmetry, while the energy bands of the parallel magnetization exhibit spin degeneration and transverse wave-vector asymmetry. These distinguishing spin-dependent and transverse wave-vector asymmetry features are essential for future spintronics devices applications. |
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| Keywords: | Energy dispersion relation Magnetic superlattice Spin splitting Electronic band Inversion anti-symmetry |
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