Journal Article

FZJ-2015-07083

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Giant magnetization canting due to symmetry breaking in zigzag Co chains on Ir(001)

Dupe, B. (Corresponding author) ; Bickel, J. E. (Corresponding author) ; Mokrousov, Y.FZJ* ; Otte, F. ; Bergmann, K. v. ; Kubetzka, A. ; Heinze, S. ; Wiesendanger, R.

2015
Dt. Physikalische Ges. [Bad Honnef]

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Please use a persistent id in citations: http://hdl.handle.net/2128/9518  doi:10.1088/1367-2630/17/2/023014

Abstract: We demonstrate a canted magnetization of biatomic zigzag Co chains grown on the (5 × 1) reconstructed Ir(001) surface using density functional theory (DFT) calculations and spin-polarized scanning tunneling microscopy (SP-STM) experiments. It is observed by STM that biatomic Co chains grow in three different structural configurations. Our DFT calculations show that they are all in a ferromagnetic (FM) state. Two chain types possess high symmetry due to two equivalent atomic strands and an easy magnetization direction that is along one of the principal crystallographic axes. The easy magnetization axis of the zigzag Co chains is canted away from the surface normal by an angle of 33°. This giant effect is caused by the broken chain symmetry on the substrate in combination with the strong spin–orbit coupling of Ir. SP-STM measurements confirm the stable FM order of the zigzag chains with a canted magnetization

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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)

Research Program(s):

1. 142 - Controlling Spin-Based Phenomena (POF3-142) (POF3-142)

Appears in the scientific report 2015

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Database coverage:
; ; ; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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