TY  - JOUR
AU  - Bouhassoune, Mohammed
AU  - Fernandes, Imara Lima
AU  - Blügel, Stefan
AU  - Lounis, Samir
TI  - Unoccupied surface and interface states in Pd thin films deposited on Fe/Ir(111) surface
JO  - New journal of physics
VL  - 21
IS  - 6
SN  - 1367-2630
CY  - [London]
PB  - IOP73379
M1  - FZJ-2019-03850
SP  - 063015
PY  - 2019
AB  - We present a systematic first-principles study of the electronic surface states and resonances occuring in thin films of Pd of various thicknesses deposited on a single ferromagnetic monolayer (ML) of Fe on top of Ir(111) substrate. This system is of interest since one Pd layer deposited on Fe/Ir(111) hosts small magnetic skyrmions. The latter are topological magnetic objects with swirling spin-textures with possible implications in the context of spintronic devices since they have the potential to be used as magnetic bits for information technology. The stabilization, detection and manipulation of such non-collinear magnetic entities require a quantitative investigation and a fundamental understanding of their electronic structure. Here we investigate the nature of the unoccupied electronic states in Pd/Fe/Ir(111), which are essential in the large spin-mixing magnetoresistance signature captured using non spin-polarized scanning tunneling microscopy (Crum et al 2015 Nat. Commun. 6 8541, Hanneken et al 2015 Nat. Nanotechnol. 10 1039). To provide a complete analysis, we investigate bare Fe/Ir(111) and Pd n = 2,7/Fe/Ir(111) surfaces. Our results demonstrate the emergence of surface and interface states after deposition of Pd MLs, which are strongly impacted by the large spin–orbit coupling of Ir surface.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000471324900001
DO  - DOI:10.1088/1367-2630/ab2487
UR  - https://juser.fz-juelich.de/record/863879
ER  -