Vier Beispiele von Doppelwirbel-Zuständen in ferromagnetischen Nanodisks

Title Vier Beispiele von Doppelwirbel-Zuständen in ferromagnetischen Nanodisks
Description Four examples of the investigated double-vortex states with opposite vorticity that are envisaged to be used for information storage and processing. In each disk the flat yellow arrow represents the sense of the circulation of the in-plane magnetization component. The red and grey arrows display the polarity of the vortex core. The tiny core with a diameter of only a few nanometers is surprisingly important for the magnetization dynamics when a current flows through the double-vortex pillars. In particular, states with different polarity combinations result in clearly different excitation frequencies.
Copyright HZDR/FZJ
Picture Id 43777
Date 13.02.2015
Downloads:
758 x 601 px Show | Download JPEG 279 kB
140 x 111 px Show | Download JPEG 14 kB
200 x 159 px Show | Download JPEG 37 kB
400 x 317 px Show | Download JPEG 67 kB