Direct observation of the temperature dependence of the Dzyaloshinskii–Moriya interaction. (12th May 2022)

• Record Type: Journal Article
• Authors: Zhang, Yabing; Kong, Xiangjie; Xu, Guofu; Jin, Ying; Jiang, Changjun; Chai, Guozhi
• Is Part Of: Journal of physics. Volume 55:Number 19(2022)
• Publication Date: 2022-05-12
• Subjects: Dzyaloshinskii–Moriya interaction -- Brillouin light scattering spectroscopy -- temperature dependence; Physics -- Periodicals; 530
• DOI: 10.1088/1361-6463/ac50cd
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: In this work, we investigate the temperature dependence of the Dzyaloshinskii–Moriya interaction (DMI) in Co/Pt thin film by observing the asymmetric spin-wave dispersion using Brillouin light scattering. The DMI constant D reduce monotonously with the temperature increasing from room temperature to 393 K. By extracting the saturation magnetization M s and the uniaxial anisotropy K u, we find that D ( T ) ∝ K u ( T ) 2.08±0.13 and D ( T ) ∝ M s ( T ) 5.25±0.33 . These observations indicate that temperature is a possible way to control the DMI. On the other hand, the temperature dependence of DMI in thin films may have significant influence for potential applications.