posted on 2024-02-07, 12:35authored byZhidong Li, Ruifu Zhang, Jun Shan, Laith Alahmed, Ailing Xu, Yuanping Chen, Jiaren Yuan, Xiaomin Cheng, Xiangshui Miao, Jiajia Wen, Yuriy Mokrousov, Young S. Lee, Lichuan Zhang, Peng Li
Electrostatic
gating has emerged as a powerful technique for tailoring
the magnetic properties of two-dimensional (2D) magnets, offering
exciting prospects including enhancement of magnetic anisotropy, boosting
Curie temperature, and strengthening exchange coupling effects. Here,
we focus on electrical control of the ferromagnetic resonance of the
quasi-2D Kagome magnet Cu(1,3-bdc). By harnessing an electrostatic
field through ionic liquid gating, significant shifts are observed
in the ferromagnetic resonance field in both out-of-plane and in-plane
measurements. Moreover, the effective magnetization and gyromagnetic
ratios display voltage-dependent variations. A closer examination
reveals that the voltage-induced changes can modulate magnetocrystalline
anisotropy by several hundred gauss, while the impact on orbital magnetization
remains relatively subtle. Density functional theory (DFT) calculations
reveal varying d-orbital hybridizations at different voltages. This
research unveils intricate physics within the Kagome lattice magnet
and further underscores the potential of electrostatic manipulation
in steering magnetism with promising implications for the development
of spintronic devices.