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• W4362607718 abstract "The interfacial Dzyaloshinskii-Moriya interaction (iDMI) originating from a heavy-metal/ferromagnet (FM) interface plays a crucial role in stabilizing chiral spin textures in magnetic multilayers. Recently, graphene based on the low-spin-orbit-coupling (SOC) element carbon ($mathrm{C}$) has shown a significant iDMI owing to the Rashba SOC when deposited on top of $mathrm{Co}$. A similar enhanced SOC has been reported earlier for other $mathrm{C}$ allotropes, namely fullerene (${text{C}}_{60}$) and carbon nanotubes, and a sizeable DMI can be expected to emerge from them. In this context, we elucidate the magnetization-reversal mechanism, the domain-wall (DW) dynamics, and the strength of the iDMI in a $mathrm{Pd}(4.0phantom{rule{0.2em}{0ex}}mathrm{nm})/mathrm{Co}(0.5phantom{rule{0.2em}{0ex}}mathrm{nm})/{text{C}}_{60}({t}_{{mathrm{C}}_{60}})/text{Pd}(2.0phantom{rule{0.2em}{0ex}}mathrm{nm})$ system with varying ${t}_{{mathrm{C}}_{60}}$. The field-induced DW velocity measured in the creep region shows a DW velocity 2 orders of magnitude higher for a sample with 1.6 nm of ${text{C}}_{60}$, due to a lower depinning field and spin-dependent hybridization at the $text{Co}/{text{C}}_{60}$ interface. Further, DMI measurements performed by use of the asymmetric DW expansion method exhibit a systematic increase in the iDMI from $ensuremath{-}0.07$ to $ensuremath{-}0.46phantom{rule{0.2em}{0ex}}mathrm{mJ}/{mathrm{m}}^{2}$ with an increase in ${t}_{{mathrm{C}}_{60}}$. Such an enhanced iDMI turns an achiral Bloch wall into a chiral N'eel wall. The emergence of a finite DMI (${D}_{mathrm{Co}/{mathrm{C}}_{60}}ensuremath{sim}ensuremath{-}0.11phantom{rule{0.2em}{0ex}}mathrm{mJ}/{mathrm{m}}^{2}$) from the $text{Co}/{text{C}}_{60}$ interface is particularly encouraging for the use of $mathrm{C}$-based materials in chiral-DW-based device applications." @default.
• W4362607718 created "2023-04-06" @default.
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• W4362607718 date "2023-04-05" @default.
• W4362607718 modified "2023-10-15" @default.
• W4362607718 title "Emergence of Sizeable Interfacial Dzyaloshinskii-Moriya Interaction at Cobalt/Fullerene Interface" @default.
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• W4362607718 doi "https://doi.org/10.1103/physrevapplied.19.044013" @default.
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