Presence of X-Ray Magnetic Circular Dichroism Signal for Zero-Magnetization Antiferromagnetic State.
作者： Motoi Kimata , Norimasa Sasabe , Tetsuya Nakamura
DOI: 10.1103/PHYSREVLETT.126.157402
关键词:
摘要: X-ray magnetic circular dichroism (XMCD) is generally not observed for antiferromagnetic (AFM) states because XMCD signals from the antiparallelly coupled spins cancel each other. In this Letter, we theoretically show presence of an signal compensated two-dimensional triangle AFM structures on a Kagome lattice. The calculation reveals complete correspondence between spectra and sign spin chirality: only appears when chirality negative. This originates different absorption coefficients three sublattices reflecting charge density anisotropies directions orbital moments.
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