C05 – Molecular magnets: single-molecule spectroscopy and electronic transport

Funding period: 2008 – 2015

Principal investigators: Mikhail Fonin, Ulrich Groth†*

Scientific staff: Stefan Ambrus, Samuel Bouvron, Elizabeta Cavar, Philipp Erler, Thomas Huhn, Luca Gragnaniello, Peter Schmitt

The control of the spin configuration of individual molecules represents one of the ultimate goals for nanoscale materials science and device engineering. Within this project we are aiming to investigate the electronic and magnetic properties of individual molecules of single molecule magnets (SMM). For this purpose we perform the chemical synthesis of magnetic molecules with a special focus on the preparation of derivatives with tailored properties and on the rational design of SMMs mostly on the basis of Mn12 and Fe4, complexes. By means of low temperature scanning tunneling microscopy and spectroscopy we then address the electronic and magnetic states of individual SMM molecules on surfaces.

For further information please also refer to the group websites: LS Rüdiger/Fonin.

List of publications

2015

  • P. Erler, P. Schmitt, N. Barth, A. Irmler, S. Bouvron, T. Huhn, U.Groth, F.Pauly, L. Gragnaniello, and M. Fonin, Highly Ordered Surface Self-Assembly of Fe4 Single Molecule Magnets, Nano Lett. (2015)
    DOI: 10.1021/acs.nanolett.5b01120
  • A. Helmstedt, N. Dohmeier, N. Müller, A. Gryzia, A. Brechling, U. Heinzmann, V. Hoeke, E. Krickemeyer, T. Glaser, P. Leicht, M. Fonin, T. Tietze, L. Joly, K. Kuepper, Probing the magnetic moments of [MnIIICrIII]3+ single-molecule magnets – A cross comparison of XMCD and spin-resolved electron spectroscopy, J. Electron. Spectrosc. Relat. Phenom. 198, 12 (2015)
    DOI: 10.1016/j.elspec.2014.11.005

2013

  • M. Herz, S. Bouvron, E. Cavar, M. Fonin, W. Belzig and E. Scheer, Fundamental quantum noise mapping with tunnelling microscopes tested at surface structures of subatomic lateral size, Nanoscale 5, 99787 (2013)
    DOI: 10.1039/c3nr02216a

2012

  • A. Helmstedt, M. D. Sacher, A. Gryzia, A. Hardera, A. Brechling, N. Müller, U. Heinzmann, V. Hoeke, E. Krickemeyer, T. Glaser, S. Bouvron, M. Fonin, Exposure of [MnIIICrIII]3+ single-molecule magnets to soft X-rays: The effect of the counterions on radiation stability, J. Electron. Spectrosc. Relat. Phenom. 184, 583 (2012)
    DOI: 10.1016/j.elspec.2011.11.002

2011

  • A. Helmstedt, N. Müller, A. Gryzia, N. Dohmeier, A. Brechling, M. D. Sacher, U. Heinzmann, V. Hoeke, E. Krickemeyer, T. Glaser, S. Bouvron, M. Fonin, and M. Neumann, Spin-resolved photoelectron spectroscopy of [MnIII CrIII ]3+ singlemolecule magnets and of manganese compounds as reference layers, J. Phys.: Condens. Matter 23, 266001 (2011)

2009

  • S. Voss, M. Fonin, U. Rüdiger, M. Burgert, U. Groth, M. Holder, Yu. S. Dedkov, and A. Preobrajensky, Investigation of the stability of Mn12 single molecule magnets, Appl. Phys. A 94, 491 (2009)
  • M. Fonin, S. Voss, S. Herr, G. de Loubens, A. D. Kent, M. Burgert, U. Groth, and U. Rüdiger, Influence of the ligand shell on the surface orientation of Mn12 single molecule magnets, Polyhedron 28, 1977 (2009)
  • S. Voss, M. Fonin, F. Zinser, M. Burgert, U. Groth, and U. Rüdiger, A possible approach towards spin-polarized transport through single molecule magnets: Mn12 on Au(100)/Fe(100)/MgO(100), Polyhedron 28, 1606 (2009)

2008

  • S. Voss, O. Zander, M. Fonin, U. Rüdiger, M. Burgert, and U. Groth, Electronic transport properties and orientation of individual Mn12 single molecule magnets, Phys. Rev. B 78, 155403 (2008)
  • S. Voss, M. Burgert, M. Fonin, U. Groth, and U. Rüdiger, A comparative study on the deposition of Mn12 single molecule magnets on the Au(111) surface, Dalton Trans., 499 (2008)
  • M. Fonin, S. Voss, M. Burgert, Yu. S. Dedkov, U. Groth, and U. Rüdiger, Scanning tunneling spectroscopy on Mn12 single molecule magnets grafted on Au(111), J. Phys.: Conf. Series 100, 052070 (2008)
  • S. Voss, S. Herr, M. Fonin, U. Rüdiger, M. Burgert, and U. Groth, Identification of linker molecules suited for deposition and study of Mn12 single molecule magnets on Au surfaces, J. Appl. Phys. 103, 07B901 (2008)