Crystal chirality magneto-optical effects in collinear antiferromagnets
Journal
Physical Review B
Journal Volume
104
Journal Issue
2
Date Issued
2021
Author(s)
Abstract
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 RuO2 and CoNb3S6, 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 N?el vector with the help of an external electric field, and the spectral integrals are strongly correlated to magnetocrystalline anisotropy energy bridging by orbital magnetic moments. ? 2021 American Physical Society.
Subjects
Antiferromagnetic materials; Atoms; Chirality; Cobalt compounds; Crystals; Electric fields; Magnetic moments; Magnetocrystalline anisotropy; Magnetooptical effects; Niobium compounds; Ruthenium compounds; Sulfur compounds; Collinear antiferromagnets; Crystal chirality; External electric field; Key characters; Magneto-optical; Magnetocrystalline anisotropy energies; Non-magnetic atoms; Orbital magnetic moment; Crystal atomic structure
Other Subjects
Antiferromagnetic materials; Atoms; Chirality; Cobalt compounds; Crystals; Electric fields; Magnetic moments; Magnetocrystalline anisotropy; Magnetooptical effects; Niobium compounds; Ruthenium compounds; Sulfur compounds; Collinear antiferromagnets; Crystal chirality; External electric field; Key characters; Magneto-optical; Magnetocrystalline anisotropy energies; Non-magnetic atoms; Orbital magnetic moment; Crystal atomic structure
Type
journal article