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Spin‐dependent processes in ZnPc single layer devices
Author(s) -
Schaefer Sebastian,
Saremi Somaieh,
Behrends Jan,
Fostiropoulos Konstantinos,
Lips Klaus,
Harneit Wolfgang
Publication year - 2009
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200982322
Subject(s) - spins , phthalocyanine , materials science , sign (mathematics) , thin film , resonance (particle physics) , optoelectronics , signal (programming language) , spin (aerodynamics) , condensed matter physics , layer (electronics) , electrode , coupling (piping) , nuclear magnetic resonance , physics , nanotechnology , atomic physics , computer science , mathematical analysis , mathematics , metallurgy , thermodynamics , programming language , quantum mechanics
Abstract Applying continuous wave electrically detected magnetic resonance (EDMR) we investigate spin dependent currents in phthalocyanine thin films. Changing the electrode materials and geometries by switching from ITO/ZnPc/Al to coplanar Au/ZnPc/Au devices, we observe a change in sign and intensity of the signal. The shape and the resonance position of the signal do not change and are a fingerprint of the phthalocyanine material. We discuss two different models explaining our results and specifically the possibility of exchange coupling between the spins.