期刊
PHYSICAL REVIEW B
卷 94, 期 18, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.94.180408
关键词
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资金
- SHINES, an Energy Frontier Research Center - U.S. Department of Energy (DoE), Office of Science, Basic Energy Science (BES) [DE-SC0012670]
- NSF DMR [1505192]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1505192] Funding Source: National Science Foundation
The interfacial Dzyaloshinskii-Moriya interaction (DMI) in ultrathin magnetic thin film heterostructures provides a new approach for controlling spin textures on mesoscopic length scales. Here we investigate the dependence of the interfacial DMI constant D on a Pt wedge insertion layer in Ta/CoFeB/Pt(wedge)/MgO thin films by observing the asymmetric spin-wave dispersion using Brillouin light scattering. Continuous tuning of D by more than a factor of 3 is realized by inserting less than one monolayer of Pt. The observations provide new insights for designing magnetic thin film heterostructures with tailored D for controlling skyrmions and magnetic domain-wall chirality and dynamics.
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