Speaker
Mr
Mehdi Heydari
(Nanolab @ Dept. Physics, University of Basel, Switzerland)
Description
Reliable organic spintronic devices depend on spin-injecting interfaces with precisely architectured multilayers to avoid premature failure e.g. due to current filaments building up at defects. Using X-ray Magnetic Circular Dichroism (XMCD) we present unambiguous evidence that in the sequential fabrication of organic bilayer interfaces by physical vapor deposition (sublimation), molecules re-organize perpendicular to the interface plane. On the basis of systematic experiments we analyse the mechanisms in this unexpected behaviour. Our results provide an analogon to the earlier established case of atomic inter-layer mixing of interfaces built with delta-doped layers in semiconductor devices as well as layered oxide films.
Authors
Jan Nowakowski
(Photon Science Department, PSI, Switzerland)
Dr
Milos Baljozovic
(Photon Science Department, PSI, Switzerland)
Mr
Mehdi Heydari
(Nanolab @ Dept. Physics, University of Basel, Switzerland)
Jan Girovsky
(Photon Science Department, PSI, Switzerland)
Christian Waeckerlin
(Photon Science Department, PSI, Switzerland)
Aneliia Waeckerlin
(Nanolab @ Dept. Physics, University of Basel, Switzerland)
Thomas Nijs
(Nanolab @ Dept. Physics, University of Basel, Switzerland)
Fatemeh Mousavi
(Nanolab @ Dept. Physics, University of Basel, Switzerland)
Olha Popova
(Nanolab @ Dept. Physics, University of Basel, Switzerland)
Mina Moradi
(Department of Chemistry and Bioanalytics, FHNW, Muttenz, Switzerland)
Armin Kleibert
(Photon Science Department, PSI, Switzerland)
Nirmalya Ballav
(Photon Science Department, PSI, Switzerland)
Jan Dreiser
(Photon Science Department, PSI, Switzerland)
Thomas A. Jung
(Photon Science Department, PSI, Switzerland)
