Magnon-induced scalar spin chirality in kagome and honeycomb ferromagnets

カゴメおよびハニカム構造の強磁性体におけるマグノン誘起スカラースピンカイラリティ

江崎 蘭世; Go, G.*; Kim, S. K.*

Esaki, Nanse; Go, G.*; Kim, S. K.*

In this study, we theoretically demonstrate that thermally excited magnons can induce scalar spin chirality (SSC) even in collinear spin systems. We show both numerically and analytically that the SSC increases with the magnitude of DMI and temperature and reveal that the magnon-induced SSC can achieve a magnitude comparable to those observed in non-coplanar spin configurations. These findings suggest that SSC plays a significant role even in collinear spin systems, providing new insights into the chiral physics of magnetic materials.