TY  - JOUR
AU  - Dupe, Bertrand
AU  - Bickel, J. E.
AU  - Mokrousov, Y.
AU  - Otte, F.
AU  - Bergmann, K von
AU  - Kubetzka, A.
AU  - Heinze, S.
AU  - Wiesendanger, R.
TI  - Giant magnetization canting due to symmetry breaking in zigzag Co chains on Ir(001)
JO  - New journal of physics
VL  - 17
IS  - 2
SN  - 1367-2630
CY  - [Bad Honnef]
PB  - Dt. Physikalische Ges.
M1  - FZJ-2015-07083
SP  - 023014
PY  - 2015
AB  - 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
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000352864800004
DO  - DOI:10.1088/1367-2630/17/2/023014
UR  - https://juser.fz-juelich.de/record/278907
ER  -