Journal Article

FZJ-2019-03850

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Unoccupied surface and interface states in Pd thin films deposited on Fe/Ir(111) surface

Bouhassoune, M. (Corresponding author)FZJ* ; Fernandes, I. L.FZJ* ; Blügel, S.FZJ* ; Lounis, S. (Corresponding author)FZJ*

2019
IOP73379 [London]

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Please use a persistent id in citations: http://hdl.handle.net/2128/22497  doi:10.1088/1367-2630/ab2487

Abstract: 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.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IAS-1)
2. Quanten-Theorie der Materialien (PGI-1)
3. JARA-FIT (JARA-FIT)
4. JARA - HPC (JARA-HPC)

Research Program(s):

1. 142 - Controlling Spin-Based Phenomena (POF3-142) (POF3-142)
2. Dynasore - Dynamical magnetic excitations with spin-orbit interaction in realistic nanostructures (681405) (681405)
3. First-principles investigation of single magnetic nano-skyrmions (jara0189_20180501) (jara0189_20180501)
4. First-principles investigation of single magnetic nano-skyrmions (jias17_20150501) (jias17_20150501)

Appears in the scientific report 2019

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Database coverage:
; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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