Journal
PHYSICAL REVIEW B
Volume 99, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.99.014433
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Funding
- RFBR [18-02-00205, 18-32-20057]
- Grant program of the Russian President [MK-5021.2018.2]
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Heavy metal/ferromagnetic superlattices are of great interest since Neel skyrmions may be stabilized in them due to an interfacial Dzyaloshinskii-Moriya interaction even at room temperature. Here we report on evidence of the strong Dzyaloshinskii-Moriya interaction in symmetric epitaxial [Co/Pd(111)](N) superlattices with high perpendicular magnetic anisotropy. The structural and magnetic properties of epitaxial [Co/Pd(111)](N) superlattices were investigated dependent on the number of Co/Pd bilayers. Based on comparison of the periodicity of experimentally obtained demagnetized patterns and simulated magnetic structures, a strong increase of the effective Dzyaloshinskii-Moriya interaction constant with increase of the period N of [Co/Pd(111)](N) superlattices is established. The origin of Dzyaloshinskii-Moriya interaction and its behavior in the symmetric [Co/Pd(111)](N) system is discussed.
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