Step-induced frustration of antiferromagnetic order in Mn on Fe(001).

نویسندگان

  • U Schlickum
  • N Janke-Gilman
  • W Wulfhekel
  • J Kirschner
چکیده

We studied the spin arrangement in ultrathin antiferromagnetic Mn films in contact with a ferromagnetic Fe(001) substrate using spin-polarized scanning tunneling microscopy. Mn shows a layerwise antiferromagnetic order on Fe(001). In regions where Mn overgrows Fe steps, a frustration of the antiferromagnetic order occurs which is similar to a 180 degrees domain wall. This topologically enforced frustration was studied as a function of Mn thickness. A linear increase of the width of the frustration region with the Mn thickness was found.

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عنوان ژورنال:
  • Physical review letters

دوره 92 10  شماره 

صفحات  -

تاریخ انتشار 2004