Modulation of magnetization dynamics in an epitaxial Heusler ferromagnet due to pure spin current in a laterally configured structure

作者：Oki Soichiro; Sasaki Yuta^*; Kasatani Yuichi; Yamada Shinya; Mizukami Shigemi; Nozaki Yukio; Hamaya Kohei^*

来源：Journal of Physics: Condensed Matter , 2018, 30(25): 255802.

DOI：10.1088/1361-648X/aac400

• Heusler alloys
• pure spin current
• spintronics
• damping constant

Using a laterally configured structure, we demonstrate modulation of the magnetization dynamics of an epitaxial Heusler ferromagnet, Fe3Si, by nonlocally injecting pure spin currents. From the ferromagnetic resonance signals, the effective Gilbert damping constant (alpha(eff)) of the epitaxial Fe3Si nanomagnet is estimated to be similar to 0.003 at room temperature. By using the lateral and nonlocal spin injection, the alpha(eff) value of the epitaxial Fe3Si nanomagnet can be modulated from 0.0034 to 0.0024. This study will open a way for control of the magnetization dynamics of high-performance ferromagnetic Heusler alloys due to pure spin currents even in laterally configured structures.

• 出版日期2018-6-27