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    STUDIA PHYSICA - Issue no. 1 / 2007  

  Abstract:  After an introduction to the scanning tunneling microscopy (STM) and spectroscopy (STS) techniques, we will explain their application to magnetic nanostructures. The constant current mode allows a complete characterization of nanostructures up to atomic resolution. The growth mode of nanostructures, e.g. by self-organization can be studied with atomic resolution. Simultaneously to this topography acquisition, the spectroscopic mode draws a map of the electronic local density of states of the sample surface. We are thus sensible to localized or delocalized surface states that also give rise to electronic standing waves, as imaged by STS. Point mode spectroscopy is also sensitive to structural properties like the stacking sequence of atomic layers within a nanostructure.  
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