Speaker
Ann-Katrin Thamm
(ETH Zürich)
Description
In the last years we established a new technology by using an in-house build STM in field emission regime. The emitter source (STM tip) is placed few nanometers away from the sample, where direct tunneling is suppressed. A part of the primary beam is backscattered (elastic and inelastic) from the sample and can escape the tip-target junction. The spin polarization of these electrons, which is a fingerprint of the surface magnetization, is analyzed with a Mott detector. We develop a new low-temperature STM (4 K) not only to increase the stability of the experiment and to reduce noise but also to be able to study fundamental spin structures.
Author
Ann-Katrin Thamm
(ETH Zürich)
Co-authors
Dr
Thomas Michlmayr
(ETH Zürich)
Dr
Urs Ramsperger
(ETH Zürich)
Prof.
Danilo Pescia
(ETH Zürich)