Speaker
Mr
Jan Girovsky
(Laboratory for Micro and Nanotechnology, Paul Scherer Institute)
Description
The assembly of spin-bearing metal-organic molecules, as for instance metallo-porphyrins and –phthalocyanines, on ferromagnetic substrates has received significant attention during the last few years [1, 2, 3]. So far most of the studies have been carried out by spectroscopic techniques lacking of spatially resolved information. Here, we present the first spectro-microscopic investigation performed by X-ray PEEM on a model system [3] consisting of manganese(III) tetraphenylporphyrin chloride (MnTPPCl) molecules adsorbed on various surfaces like native Co, oxygen-covered Co, and a chromium wedge layer on Co[4]. Our results demonstrate that X-ray PEEM in combination with X-ray magnetic circular dichroism can be used to study the induced magnetic moments in a molecular monolayer of spin-bearing molecules with submicron spatial resolution.
[1] H. Wende et al., Nat. Materials 6, 516 (2007)
[2] C. Wäckerlin et al., Chem. Science 3, 3154, (2012)
[3] A. Scheybal et al., Chem. Phys. Lett. 411, 214 (2005)
[4] J. Girovsky et al., submitted (2013).
Primary author
Mr
Jan Girovsky
(Laboratory for Micro and Nanotechnology, Paul Scherer Institute)
Co-authors
Dr
Armin Kleibert
(Swiss Light Source, Paul Scherrer Institute)
Dr
Christian Wäckerlin
(Laboratory for Micro and Nanotechnology, Paul Scherrer Institute)
Dr
Dorota Siewert
(Department of Physics, University of Basel)
Prof.
Frithjof Nolting
(Swiss Light Source, Paul Scherrer Institute)
Mr
Jan Nowakowski
(Laboratory for Micro and Nanotechnology, Paul Scherrer Institute)
Mr
Michele Buzzi
(Swiss Light Source, Paul Scherrer Institute)
Dr
Nirmalya Ballav
(Department of Chemistry, Indian Institute of Science Education and Research, Pune)
Prof.
Peter M. Oppeneer
(Department of Physics and Astronomy, University of Uppsala)
Prof.
Thomas Jung
(Laboratory for Micro and Nanotechnology, Paul Scherrer Institute)
