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发表刊物：Nano Letters

关键字：topological orbit moment, topological magnon insulator, Kagome magnet, magnon excitation, g-factor anisotropy

摘要：We explore spin dynamics in Cu(1,3-bdc), a quasi-2D topological magnon insulator. The results show that the thermal evolution of Land´e g-factor (g) is anisotropic: gin-plane reduces while gout-plane increases with increasing temperature T. Moreover, the anisotropy of the g-factor (∆g) and the anisotropy of saturation magnetization (∆Ms) are correlated below 4 K, but they diverge above 4 K. We show that the electronic orbital moment contributes to the g anisotropy at lower T, while the topological orbital moment induced by thermally excited spin chirality dictates the g anisotropy at higher T. Our work suggests an interplay among topology, spin chirality, and orbital magnetism in Cu(1,3-bdc).

学科门类：工学

卷号：22

页面范围：5114−5119

是否译文：否

发表时间：2022-01-12