Detection of Spin Transfer from Metal to Molecule by Magnetoresistance Measurement
Hiromu Gamou1, Koki Shimose2, Ryoto Enoki1
1Department of Materials Science , Tohoku University , Sendai , Miyagi 980-8579 , Japan.
Abstract:
Localized electronic spin state in molecules has a relatively long spin lifetime and has thus attracted much attention. In this study, we characterize the magnetoresistance of a system comprising Pt and Fe(II)-phthalocyanine (FePc) molecules. The magnetoresistance measurement with the weak antilocalization analysis reveals that a magnetic moment in FePc acts as magnetic impurities for conduction electrons in Pt. Moreover, we find that the magnetoresistance involves a component that possesses the same symmetry as spin-Hall magnetoresistance. These results reveal the spin-angular momentum transfer from metallic Pt to a magnetic moment in FePc molecules, which can be used as a spin torque in a molecular system.
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