TY  - JOUR
AU  - Blanco-Rey, M.
AU  - Bihlmayer, G.
AU  - Arnau, A.
AU  - Cerdá, J. I.
TI  - Nature of interfacial Dzyaloshinskii-Moriya interactions in graphene/Co/Pt(111) multilayer heterostructures
JO  - Physical review / B
VL  - 106
IS  - 6
SN  - 1098-0121
CY  - Woodbury, NY
PB  - Inst.
M1  - FZJ-2022-03124
SP  - 064426
PY  - 2022
AB  - Density-functional theory calculations utilizing the generalized Bloch theorem show that interfacial Dzyaloshinskii-Moriya interactions (DMI) at both interfaces of graphene/Con/Pt(111) multilayer heterostructures are decoupled for n≥3. Unlike the property of magnetocrystalline anisotropy, DMI in this system is not strongly affected by stacking defects in the Co layer. The effect of graphene (Gr) is to invert the chirality of the vaccum/Co interfacial DMI, overall reducing the DMI of the heterostructure, which is nevertheless dominated by the strong spin-orbit coupling (SOC) of Pt. A spectral analysis in reciprocal space shows that DMI at both the Gr/Co and Co/Pt interfaces have similar contributions from the strongly hybridized SOC-split d bands. Our analysis proves that the DMI in this family of Gr-capped 3d/5d metal heterostructures displays richer physics than what is expected from the prediction of single-band models, such as the Rashba DMI mode
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000860384100004
DO  - DOI:10.1103/PhysRevB.106.064426
UR  - https://juser.fz-juelich.de/record/909325
ER  -