Scanning Tunneling Microscopy Study of Square Manganese Tetramers on Mn3N2 (001)

Details Scanning Tunneling Microscopy Study of Square Manganese Tetramers on Mn3N2 (001) Scanning Tunneling Microscopy Study of Square Manganese Tetramers on Mn3N2 (001)

2005-12-06

arxiv.org/abs/cond-mat/0512104v1

Physics

Condensed Matter

Materials Science

9 pages, 4 figures

Scientific paper

We have investigated the growth of antiferromagnetic Mn3N2(001) on MgO (001) by molecular beam epitaxy and scanning tunneling microscopy . The images show smooth terraces and atomic steps. On some of the terraces a unique and new reconstruction is seen, resolved as square Mn tetramers in a c(4x2) structural arrangement. Two domains of the tetramer reconstruction, rotated by 90$^\circ$ to each other, occur. A model is presented for this square Mn tetramer reconstruction, in which the Mn atoms of the tetramer layer belong to the Mn layer at the surface in the MnN-MnN-Mn stacking sequence.

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