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Resolving complex atomic-scale spin structures by spin-polarized scanning tunneling microscopy. | LitMetric

Resolving complex atomic-scale spin structures by spin-polarized scanning tunneling microscopy.

Phys Rev Lett

Institut für Festkörperforschung, Forschungszentrum Jülich, D-52425 Jülich, Germany.

Published: April 2001

The spin-polarized scanning tunneling microscope (SP-STM) operated in the constant current mode is proposed as a powerful tool to investigate complex atomic-scale magnetic structures of otherwise chemically equivalent atoms. The potential of this approach is demonstrated by successfully resolving the magnetic structure of Cr/Ag(111), which is predicted on the basis of ab initio vector spin-density calculations to be a coplanar noncollinear periodic 120 degrees Néel structure. Different operating modes of the SP-STM are discussed on the basis of the model of Tersoff and Hamann.

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http://dx.doi.org/10.1103/PhysRevLett.86.4132DOI Listing

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