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In-plane Néel wall chirality and orientation of interfacial Dzyaloshinskii-Moriya vector in magnetic films

AuthorsRobertson, M.; Agostino, C.J.; Chen, Gong; Kang, S.P.; Mascaraque, Arantzazu ; Garcia Michel, E.; Won, C.; Wu, Y.; Schmid, A.K.; Liu, K.
Issue Date14-Jul-2020
PublisherAmerican Physical Society
CitationPhysical Review B 102: 024417 (2020)
AbstractThe interfacial Dzyaloshinskii-Moriya interaction (DMI) is of great interest as it can stabilize chiral spin structures in thin films. Experiments verifying the orientation of the interfacial DMI vector remain rare, in part due to the difficulty of separating vector components of DMI. In this study, Fe/Ni bilayers and Co/Ni multilayers were deposited epitaxially onto Cu(001) and Pt(111) substrates, respectively. By tailoring the effective anisotropy, spin reorientation transitions (SRTs) are employed to probe the orientation of the DMI vector by measuring the spin structure of domain walls on both sides of the SRTs. The interfacial DMI is found to be sufficiently strong to stabilize chiral Néel walls in the out-of-plane magnetized regimes, while achiral Néel walls are observed in the in-plane magnetized regimes. These findings experimentally confirm that the out-of-plane component of the DMI vector is insignificant in these fcc(001) and fcc(111) oriented interfaces, even in the presence of atomic steps.
Description6 pags., 5 figs.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.102.024417
Identifiersdoi: 10.1103/PhysRevB.102.024417
issn: 2469-9969
Appears in Collections:(IQFR) Artículos
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