论文标题
MNTE价带对磁矩方向的敏感性
Sensitivity of the MnTe valence band to orientation of magnetic moments
论文作者
论文摘要
得出了Brillouin区A点附近的六边形（NIAS结构）锰酸盐价带的有效模型。结果表明，尽管对于通常的抗铁磁阶（基底平面中的磁矩）板划分很小，但它们的平面外旋转会急剧增强（约为0.5 eV）。我们提出了最近实验的扩展（Moseley等，Phys。Rev。材料6，014404），其中在Li掺杂的MNTE中观察到了这种磁晶型偏反转的反转，以确认半导体带结构到磁性顺序的这种不寻常的敏感性。
An effective model of the hexagonal (NiAs-structure) manganese telluride valence band in the vicinity of the A-point of the Brillouin zone is derived. It is shown that while for the usual antiferromagnetic order (magnetic moments in the basal plane) band splitting at A is small, their out-of-plane rotation enhances the splitting dramatically (to about 0.5 eV). We propose extensions of recent experiments (Moseley et al., Phys. Rev. Materials 6, 014404) where such inversion of magnetocrystalline anisotropy has been observed in Li-doped MnTe, to confirm this unusual sensitivity of a semiconductor band structure to magnetic order.
