AVS 61st International Symposium & Exhibition
    Magnetic Interfaces and Nanostructures Monday Sessions
       Session MI+EM-MoM

Paper MI+EM-MoM10
Coverage-Dependent Surface Magnetism of Iron Phthalocyanine on an O-Fe(110) Surface

Monday, November 10, 2014, 11:20 am, Room 311

Session: Interfacial Effects in Oxide Heterostructures 
Presenter: Jack Rowe, North Carolina State University
Authors: J.E. Rowe, North Carolina State University
D.B. Dougherty, North Carolina State University
E. Vescovo, National Synchrotron Light Source
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Iron phthalocyanine adsorbed on an oxygen covered Fe(110) surface shows a complex coverage-dependent spin polarization during growth of the first molecular monolayer. Spin polarization is modified at low submonolayer coverages, absent at intermediate submonolayer coverages, and re-appears in modified form for a complete monolayer. This is attributed to coverage-dependent adsorption configurations from a random adsorption system to a packed monolayer with a well-defined interfacial spin polarization. In addition, we report on the observation of a rotation of the spin direction of photoelectrons in the presence of molecules, which is attributed to molecular modifications of surface magnetic anisotropy.