Scanning Tunneling Microscope Study of a Local Electronic State Surrounding Mn Nanoclusters on Graphite
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We have investigated the influence of Mn nanoclusters on the electronic structure of graphite using the scanning tunneling microscope. The $dI/dV$ spectra and the $dI/dV$ images indicate that a number of Mn nanoclusters of sizes less than one nanometer induce an unexpected local electronic state that surrounds the nanocluster and spreads out by 6–8 nm diameter. This localized state is not observed around a Mn monomer (or trimer) or Mn nanoparticles larger than 1 nm. The localized state is presumably caused by the electronic coupling between the Mn nanocluster and graphite surface, or by a local magnetic field generated by the Mn nanocluster.
- Jpn J Appl Phys
Jpn J Appl Phys 45(17), L469-L471, 2006-05-25
INSTITUTE OF PURE AND APPLIED PHYSICS