论文标题
共线反铁磁铁的电晶体手性磁光效应
Electrically Controllable Crystal Chirality Magneto-Optical Effects in Collinear Antiferromagnets
论文作者
论文摘要
磁原子创建的自旋手性已被全面理解为产生和控制磁光学效应。相比之下，与非磁原子相关的晶体手性的作用受到了较少的关注。在这里，我们从理论上发现了晶体手性磁光（CCMO）效应，该效应取决于源自非磁原子的重排的晶体结构的手性。我们表明，CCMO效应存在于许多共线抗Fiferromagnets中，例如Ruo $ _ {2} $和CONB $ _ {3} $ S $ _ {6} $，分别具有局部和全局的晶体chirality。 CCMO效应的关键特征是如果晶体手性逆转，则符号变化。 CCMO光谱的幅度可以通过在外部电场的帮助下重新定位NéelVector来有效地操纵，并且发现光谱积分与磁环晶各向异性能量成正比。
The spin chirality, created by magnetic atoms, has been comprehensively understood to generate and control the magneto-optical effects. In comparison, the role of the crystal chirality that relates to nonmagnetic atoms has received much less attention. Here, we theoretically discover the crystal chirality magneto-optical (CCMO) effects, which depend on the chirality of crystal structures that originates from the rearrangement of nonmagnetic atoms. We show that the CCMO effects exist in many collinear antiferromagnets, such as RuO$_{2}$ and CoNb$_{3}$S$_{6}$, which has a local and global crystal chirality, respectively. The key character of the CCMO effects is the sign change if the crystal chirality reverses. The magnitudes of the CCMO spectra can be effectively manipulated by reorienting the Néel vector with the help of an external electric field, and the spectral integrals are found to be proportional to magnetocrystalline anisotropy energy.
