STM STUDIES OF ISOLATED Mn-12-Ph SINGLE-MOLECULE MAGNETS

abstract

• We have studied Mn12O12(C6H5COO)16(H2O)4 (Mn12-Ph) single-molecule magnets on highly ordered pyrolytic graphite (HOPG) using low-temperature scanning tunneling microscopy (LT-STM) experiments. We report Mn12-Ph in isolation, resembling single molecules with metallic core atoms and organic outer ligands. The local tunneling current observed within the molecular structure shows a strong bias voltage dependency, which is distinct from that of the HOPG surface. Furthermore, evidence of internal inhomogeneity in the local density of states has been observed with high spatial resolution, and this inhomogeneity appears to be due to localized metallic behavior. These results facilitate magneto-metric studies of single-molecule magnets in isolation. As compared to bulk crystal studies, our experiments allow the specific investigation of atomic sites in the molecule.

authors

• Dunbar, Kim
• Teizer, Winfried

published proceedings

• SPIN

author list (cited authors)

• Reaves, K., Kim, K., Iwaya, K., Hitosugi, T., Katzgraber, H. G., Zhao, H., Dunbar, K. R., & Teizer, W.

citation count

• 4

complete list of authors

• Reaves, K||Kim, K||Iwaya, K||Hitosugi, T||Katzgraber, HG||Zhao, H||Dunbar, KR||Teizer, W

publication date

• March 2013

publisher

• World Scientific Publishing  Publisher

published in

• SPIN  Journal

keywords

• Low-temperature Scanning Tunneling Microscopy
• Lt-stm
• Scanning Tunneling Spectroscopy
• Single-molecule Magnets
• Smms
• Squid
• Sts
• Superconducting Quantum Interference Device

Digital Object Identifier (DOI)

• 10.1142/S2010324713500045

start page

• 1350004

end page

• 1350004

volume

• 3

issue

• 1

URL

• http://dx.doi.org/10.1142/s2010324713500045