Integrated setup for the fabrication and measurement of magnetoresistive nanoconstrictions in ultrahigh vacuum.
A UHV instrument is presented for in situ fabrication of nanostructures and in situ investigation of their magnetoresistance. Nanostructures of diverse shape and size are created from thin films utilizing a focused ion beam. The magnetic nanostructures are contacted via a micromanipulator, which makes it possible to address the individual structures. The system is additionally equipped with a scanning electron microscope column, which is used for damage-free navigation and control of the structuring and contacting. First magnetoresistance measurements of structures carved into a Permalloy film demonstrate the high sensitivity and the flexibility of the new setup.
Stickler
Daniel
D
Institut für Angewandte Physik, Universität Hamburg, Jungiusstr. 11, 20355 Hamburg, Germany. daniel.stickler@physnet.uni-hamburg.de
Frömter
Robert
R
Li
Wei
W
Kobs
André
A
Oepen
Hans Peter
HP