Journal Article

FZJ-2019-04286

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png The chiral biquadratic pair interaction

Brinker, S. (Corresponding author)FZJ* ; Dias, M. d. 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/2128/22597  doi:10.1088/1367-2630/ab35c9

Abstract: Magnetic interactions underpin a plethora of magnetic states of matter, hence playing a central role both in fundamental physics and for future spintronic and quantum computation devices. The Dzyaloshinskii–Moriya interaction, ${{\bf{D}}}_{{ij}}\cdot ({{\bf{S}}}_{i}\times {{\bf{S}}}_{j})$, being chiral and driven by relativistic effects, leads to the stabilization of highly-noncollinear spin textures such as skyrmions, which thanks to their topological nature are promising building blocks for magnetic data storage and processing elements. Here, we reveal and study a new chiral pair interaction, ${{\bf{C}}}_{{ij}}\cdot ({{\bf{S}}}_{i}\times {{\bf{S}}}_{j})({{\bf{S}}}_{i}\cdot {{\bf{S}}}_{j})$, which is the biquadratic equivalent of the DMI. First, we derive this interaction and its guiding principles from a microscopic model, and we connect the atomistic form to the micromagnetic one. Second, we study its properties in the simplest prototypical systems, magnetic 3d transition metal dimers deposited on the Pt(111), Pt(100), Ir(111), and Re(0001) surfaces, resorting to systematic first-principles calculations. Lastly, we discuss its importance and implications not only for magnetic dimers but also for extended systems, namely one-dimensional spin spirals and complex two-dimensional magnetic structures, such as a nanoskyrmion lattice found in an Fe monolayer on Ir(111).

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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. First-principles investigation of single magnetic nano-skyrmions (jias17_20150501) (jias17_20150501)
3. First-principles investigation of single magnetic nano-skyrmions (jara0189_20180501) (jara0189_20180501)
4. First-principles investigation of long range effects in magnetic nanostructures (jias1c_20171101) (jias1c_20171101)

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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