Atomic-scale magnetic domain walls in quasi-one-dimensional Fe nanostripes

被引:131
作者
Pratzer, M
Elmers, HJ
Bode, M
Pietzsch, O
Kubetzka, A
Wiesendanger, R
机构
[1] Univ Mainz, Inst Phys, D-55099 Mainz, Germany
[2] Univ Hamburg, Inst Appl Phys, D-20355 Hamburg, Germany
[3] Univ Hamburg, Microstruct Res Ctr, D-20355 Hamburg, Germany
关键词
D O I
10.1103/PhysRevLett.87.127201
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Fe nanostripes on W(110) are investigated by Kerr magnetometry and spin-polarized scanning tunneling microscopy (SP-STM). An Arrhenius law is observed for the temperature dependent magnetic susceptibility indicating a one-dimensional magnetic behavior. The activation energy for creating antiparallel spin blocks indicates extremely narrow domain walls with a width on a length scale of the lattice constant. This is confirmed by imaging the domain wall by SP-STM. This information allows the quantification of the exchange stiffness and the anisotropy constant.
引用
收藏
页码:127201 / 127201
页数:4
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