Journal Article

FZJ-2020-04155

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Large Dzyaloshinskii-Moriya interaction induced by chemisorbed oxygen on a ferromagnet surface

Chen, G. (Corresponding author) ; Mascaraque, A. ; Jia, H.FZJ* ; Zimmermann, B. ; Robertson, M. ; Conte, R. L. ; Hoffmann, M.FZJ* ; González Barrio, M. A. ; Ding, H. ; Wiesendanger, R. ; Michel, E. G. ; Blügel, S.FZJ* ; Schmid, A. K. ; Liu, K. (Corresponding author)

2020
Assoc. Washington, DC [u.a.]

This record in other databases:      

Please use a persistent id in citations: http://hdl.handle.net/2128/26003  doi:10.1126/sciadv.aba4924

Abstract: he Dzyaloshinskii-Moriya interaction (DMI) is an antisymmetric exchange interaction that stabilizes chiral spin textures. It is induced by inversion symmetry breaking in noncentrosymmetric lattices or at interfaces. Recently, interfacial DMI has been found in magnetic layers adjacent to transition metals due to the spin-orbit coupling and at interfaces with graphene due to the Rashba effect. We report direct observation of strong DMI induced by chemisorption of oxygen on a ferromagnetic layer at room temperature. The sign of this DMI and its unexpectedly large magnitude—despite the low atomic number of oxygen—are derived by examining the oxygen coverage–dependent evolution of magnetic chirality. We find that DMI at the oxygen/ferromagnet interface is comparable to those at ferromagnet/transition metal interfaces; it has enabled direct tailoring of skyrmion’s winding number at room temperature via oxygen chemisorption. This result extends the understanding of the DMI, opening up opportunities for the chemisorption-related design of spin-orbitronic devices.

---

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. 143 - Controlling Configuration-Based Phenomena (POF3-143) (POF3-143)
3. Systematic investigation of magnetic thin films and multi-layers - towards sub-10nm skyrmions for future data storage devices (jara0197_20191101) (jara0197_20191101)

Appears in the scientific report 2020

---

Database coverage:
; ; ; ; Article Processing Charges ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Essential Science Indicators ; Fees ; IF >= 10 ; JCR ; NCBI Molecular Biology Database ; PubMed Central ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection ; Zoological Record

---