Topology-induced spin frustrations at the Cr(001) surface studied by spin-polarized scanning tunneling spectroscopy

Authors
Kleiber, M Bode, M Ravlic, R Wiesendanger, R
Citation
M. Kleiber et al., Topology-induced spin frustrations at the Cr(001) surface studied by spin-polarized scanning tunneling spectroscopy, PHYS REV L, 85(21), 2000, pp. 4606-4609
Citations number
21
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
85
Issue
21
Year of publication
2000
Pages
4606 - 4609
Database
ISI
SICI code
0031-9007(20001120)85:21<4606:TSFATC>2.0.ZU;2-U
Abstract
The magnetic structure of the Cr(001) surface was investigated by spin-pola rized scanning tunneling spectroscopy by making use of the spin-polarized s urface state located close to the Fermi level. Periodic alternations of the intensity of the surface state peak in local tunneling spectra measured ab ove different ferromagnetic terraces separated by monatomic steps confirm t he topological antiferromagnetic order of the Cr(001) surface. Screw disloc ations cause topology-induced spin frustration, leading to the formation of domain walls with a width of about 120 nm.