Journal
PHYSICAL REVIEW APPLIED
Volume 9, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevApplied.9.014008
Keywords
-
Categories
Funding
- Department of Science and Technology (DST), Government of India [SR/NM/NS-09/2011]
- S. N. Bose National Centre for Basic Sciences [SNB/AB/12-13/96]
- DST, Government of India [IF150922, SB/S2/RJN-093/2014]
- S. N. Bose National Centre for Basic Sciences
Ask authors/readers for more resources
The interfacial Dzyaloshinskii-Moriya interaction (IDMI) has recently drawn extensive research interest due to its fundamental role in stabilizing chiral spin textures in ultrathin ferromagnets, which are suitable candidates for future magnetic-memory devices. Here, we explore the ferromagnetic and heavy-metal layer-thickness dependence of IDMI in technologically important Ta/Co20Fe60B20/TaOx heterostructures by measuring nonreciprocity in spin-wave frequency using the Brillouin light-scattering technique. The observed value of the IDMI constant agrees with that obtained from a separate measurement of in-plane angular dependence of frequency nonreciprocity, which is also in good agreement with the theory predicted by Cortes-Ortuno and Landeros. Linear scaling behavior of IDMI with the inverse of Co-Fe-B thicknesses suggests that IDMI originates primarily from the interface in these heterostructures, whereas we observe a weak dependence of Ta thickness on the strength of IDMI. Importantly, the observed value of the IDMI constant is reasonably large by a factor of 3 compared to annealed Ta/Co-Fe-B/MgO heterostructures. We propose that the observation of large IDMI is likely due to the absence of boron diffusion towards the Ta/Co-Fe-B interface as the heterostructures are as deposited. Our detailed investigation opens up a route to designing thin-film heterostructures with the tailored IDMI constant for controlling Skyrmion-based magnetic-memory devices.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available