PUMA
Istituto per lo Studio dei Materiali Nanostrutturati     
Barra M., Cassinese A., D'Angelo P., Hueso L. E., Graziosi P., Dediu V. Manganite/Alq3 interfaces investigated by impedance spectroscopy technique. In: Organic Electronics, vol. 9 (5) pp. 911 - 915. Elsevier B.V, 2008.
 
 
Abstract
(English)
With the general objective of studying interfaces between ferromagnetic materials and organic semiconductors, we report ac impedance investigations on La0.7Sr0.3MnO3 (LSMO)/tris(8-hydroxyquinoline)aluminium (Alq3)/Al and Indium Tin Oxide (ITO)/Alq3/Al heterostructures, in the frequency range between 20 Hz and 1 MHz. The comparison of the equivalent circuits deduced to fit the experimental ac responses allows isolating a specific RC contribution which can be attributed to the LSMO/Alq3 interface region. Using the information obtained from our ac measurements, we propose a model which fits the temperature dependence of the magnetoresistance in spin valves combining LSMO electrodes and Alq3 layers.
DOI: 10.1016/j.orgel.2008.05.016
Subject Organic spintronics
Hybrid devices
Interfaces
ALq3
Manganite
Magnetoelectronics
Spintronics
75.47.Lx
72.80.Le
72.25.Hg
74.78.Fk


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