Lokale Spektroskopie von Korrelationseffekten auf Übergangsmetalloxid- und Seltenerdmetalloberflächen

• Applicant: Professor Dr. Matthias Bode
• Subject Area: Experimental Condensed Matter Physics
• Term: from 2005 to 2008
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 18078998

• Final Report Year: 2008

Final Report Abstract

In summary, we have imaged the domain and domain wall structure of thin Dy films which were epitaxially grown on W(110). Our spin-polarized STM studies clearly reveal that the surface of Dy films is ferromagnetically ordered for thicknesses larger than 14 AL. A sixfold symmetry of the surface results in domains which are mainly separated by 60° domain walls. These domains alternate with a periodicity of about 40 nm. An analysis of domain wall profiles reveals that the surface is dominated by Neel walls.

Publications

• L. Berbil-Bautista, S. Krause, M. Bode, and R. Wiesendanger, Phys. Rev. B 76, 064411 (2007): "Spin-polarized scanning tunneling microscopy and spectroscopy of ferromagnetic Dy(0001)/W(110) films".
  
  
• Luis Berbil-Bautista: "Ferromagnetic thin films and nanostructures studied by spin-polarized scanning tunneling microscopy" Dissertation, Universität Hamburg (2006)
  
  
• S. Krause, L. Berbil-Bautista, T. Hanke, F. Vonau, M. Bode, and R. Wiesendanger, Europhys. Lett. 76, 637 (2006): "Consequences of line defects on the magnetic structure of high anisotropy films: Pinning centers on Dy/W(110)".