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Anisotropy Switch in Molecular Magnets on Surfaces
Molecular nanomagnets are attractive candidates as building blocks for future spintronics applications.
Keywords: Molecular magnetism; molecular nanomagnets; ultra high vacuum; X-ray absorption spectroscopy; X-ray magnetic circular dichroism; scanning tunneling microscopy
In the sandwich-type molecular magnets [PPh4] [Ln{Pt(SAc)4}2] (Ln: lanthanide, SAc−: thioacetate) the switching between different types of the magnetic anisotropy (easy axis, easy plane, easy cone etc) is observed at a certain critical temperature. The critical temperature depends strongly on the ligand field surrounding the magnetic lanthanide ion. In this master project you will deposit the above mentioned or similar molecular magnets on a surface, characterize them by scanning tunneling microscopy and measure the magnetic properties of these submonolayers of molecular magnets by X-ray absorption spectroscopy and X-ray magnetic circular dichroism.
In the sandwich-type molecular magnets [PPh4] [Ln{Pt(SAc)4}2] (Ln: lanthanide, SAc−: thioacetate) the switching between different types of the magnetic anisotropy (easy axis, easy plane, easy cone etc) is observed at a certain critical temperature. The critical temperature depends strongly on the ligand field surrounding the magnetic lanthanide ion. In this master project you will deposit the above mentioned or similar molecular magnets on a surface, characterize them by scanning tunneling microscopy and measure the magnetic properties of these submonolayers of molecular magnets by X-ray absorption spectroscopy and X-ray magnetic circular dichroism.
* to deposit the molecular magnets in the monolayer regime on different surfaces of metal single crystals
* to characterize the sample morphology by scanning tunneling microscopy
* to measure the magnetic properties of monolayers of molecular magnets study the presence of the anisotropy switch effect
* to deposit the molecular magnets in the monolayer regime on different surfaces of metal single crystals * to characterize the sample morphology by scanning tunneling microscopy * to measure the magnetic properties of monolayers of molecular magnets study the presence of the anisotropy switch effect
Dr. Jan Dreiser
jan.dreiser@psi.ch
phone +41 (0) 56 310 5895
https://www.psi.ch/en/lsc/people/jan-gui-hyon-dreiser https://www.psi.ch/en/sls/xtreme
Dr. Jan Dreiser jan.dreiser@psi.ch phone +41 (0) 56 310 5895 https://www.psi.ch/en/lsc/people/jan-gui-hyon-dreiser https://www.psi.ch/en/sls/xtreme