Speaker
Dr
Rolf Allenspach
(IBM Research - Zurich)
Description
The textbook magnetic domain wall is a very simple object: Its shape and width are described by a few material properties only. In nanostructures, however, the situation is different. By high-resolution imaging we observe complex spin arrangements that strongly deviate from those commonly encountered in magnetic films or bulk ferromagnets, for in-plane as well as perpendicularly magnetized systems. Wall profiles and even wall types can be tailored by geometry, such as wire width or constrictions. Dzyaloshinskii-Moriya exchange interaction is another parameter to modify a domain wall. We will discuss whether and how these extra handles can be exploited for spintronics applications, such as sensors or storage and memory concepts.
Author
Dr
Rolf Allenspach
(IBM Research - Zurich)
