Regensburg 2013 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 29: Focus Session: Organic Materials for Spintronics: From Spinterface to Devices (jointly with HL, MA, O)

DS 29.7: Vortrag

Donnerstag, 14. März 2013, 12:45–13:00, H32

ESR study of the magnetic properties of the MnPc – F₁₆CoPc dimer — •Azar Aliabadi, Susi Linder, Martin Knupfer, Yulia Krupskaya, Vladislav Kataev, and Bernd Büchner — IFW Dresden, 01069 Dresden

Photoemission spectroscopy has demonstrated a charge transfer at the interface between two transition metal phtalocyanines (MnPc and F₁₆CoPc) indicating the formation of a MnPc^δ+/F₁₆CoPc^δ− heterojunction [1]. In this work, the MnPc-F₁₆CoPc dimer system with charge transfer was investigated using ESR spectroscopy at different temperatures. Comparison between ESR spectra of the parent compounds (MnPc and F₁₆CoPc powders) and of the product of the reaction (MnPc/F₁₆CoPc mixed powder) has revealed characteristic features due to the formation of the MnPc – F₁₆CoPc dimer. We discuss distinct magnetic properties of the MnPc – F₁₆CoPc dimer and their possible relation to the charge transfer in the studied complex.

[1] S. Lindner, M. Knupfer, R. Friedrich, T. Hahn, and J. Kortus, Phys. Rev. Lett. 109, 027601 (2012).