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Image: Sahana Rößler and Steffen Wirth, MPI for Chemical Physics of Solids Dresden, Germany.
This three-dimensional image visualizes the surface of a samarium boron sample as seen by a scanning tunneling microscope. The surface was obtained by cleaving the sample at low temperature and in an ultra-high vacuum. The brighter and higher ridges represent samarium atoms which form chain-like zig-zag patterns residing on top of an otherwise flat boron surface.