期刊
PHYSICAL REVIEW LETTERS
卷 85, 期 21, 页码 4606-4609出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.85.4606
关键词
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The magnetic structure of the Cr(001) surface was investigated by spin-polarized scanning tunneling spectroscopy by making use of the spin-polarized surface state located close to the Fermi level. Periodic alternations of the intensity of the surface state peak in local tunneling spectra measured above different ferromagnetic terraces separated by monatomic steps confirm the topological antiferromagnetic order of the Cr(001) surface. Screw dislocations cause topology-induced spin frustration, leading to the formation of domain walls with a width of about 120 nm.
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