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RESEARCH PRODUCT
Atomic-scale magnetic domain walls in quasi-one-dimensional Fe nanostripes.
André KubetzkaO. PietzschM. PratzerRoland WiesendangerHans-joachim ElmersMatthias Bodesubject
Length scaleMaterials scienceCondensed matter physicsMagnetic domainGeneral Physics and AstronomySpin polarized scanning tunneling microscopyActivation energyMagnetic susceptibilitylaw.inventionCondensed Matter::Materials ScienceLattice constantlawCondensed Matter::SuperconductivityMagnetic force microscopeScanning tunneling microscopedescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2001-08-28 | Physical review letters |