-A A +A
Vertical crossbar devices based on manganite and cobalt injecting electrodes and a metal-quinoline molecular transport layer are known to manifest both magnetoresistance (MR) and electrical bistability. The two effects are strongly interwoven, inspiring new device applications such as electrical control of the MR and magnetic modulation of bistability. To explain the device functionality, we identify the mechanism responsible for electrical switching by associating the electrical conductivity and the impedance behavior with the chemical states of buried layers obtained by in operando photoelectron spectroscopy. These measurements revealed that a significant fraction of oxygen ions migrate under voltage application, resulting in a modification of the electronic properties of the organic material and of the oxidation state of the interfacial layer with the ferromagnetic contacts. Variable oxygen doping of the organic …
American Chemical Society
Publication date: 
7 Feb 2018

Ilaria Bergenti, Francesco Borgatti, Marco Calbucci, Alberto Riminucci, Raimondo Cecchini, Patrizio Graziosi, Donald A MacLaren, Angelo Giglia, Jean Pascal Rueff, Denis Céolin, Luca Pasquali, Valentin Dediu

Biblio References: 
Volume: 10 Issue: 9 Pages: 8132-8140
ACS applied materials & interfaces