TY  - JOUR
AU  - Krönlein, Andreas
AU  - Schmitt, Martin
AU  - Hoffmann, Markus
AU  - Kemmer, Jeannette
AU  - Seubert, Nicolai
AU  - Vogt, Matthias
AU  - Küspert, Julia
AU  - Böhme, Markus
AU  - Alonazi, Bandar
AU  - Kügel, Jens
AU  - Albrithen, Hamad A.
AU  - Bode, Matthias
AU  - Bihlmayer, Gustav
AU  - Blügel, Stefan
TI  - Magnetic Ground State Stabilized by Three-Site Interactions: Fe / Rh ( 111 )
JO  - Physical review letters
VL  - 120
IS  - 20
SN  - 1079-7114
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2018-02972
SP  - 207202
PY  - 2018
AB  - We report the direct observation of a theoretically predicted magnetic ground state in a monolayer Fe on Rh(111), which is referred to as an up-up-down-down (↑↑↓↓) double-row-wise antiferromagnetic spin structure, using spin-polarized scanning tunneling microscopy. This exotic phase, which exists in three orientational domains, is revealed by experiments with magnetic probe tips performed in external magnetic fields. It is shown that a hitherto unconsidered four-spin–three-site beyond-Heisenberg interaction distinctly contributes to the spin coupling of atoms with S≥1 spins. The observation of the ↑↑↓↓ order substantiates the presence of higher-order, in particular, three-site interactions, in thin magnetic films of itinerant magnets.
LB  - PUB:(DE-HGF)16
C6  - pmid:29864328
UR  - <Go to ISI:>//WOS:000432992600007
DO  - DOI:10.1103/PhysRevLett.120.207202
UR  - https://juser.fz-juelich.de/record/845763
ER  -