Kammerer, Matthias and Stoll, Hermann and Noske, Matthias and Sproll, Markus and Weigand, Markus and Illg, Christian and Woltersdorf, Georg and Faehnle, Manfred and Back, Christian and Schuetz, Gisela (2012) Fast spin-wave-mediated magnetic vortex core reversal. PHYSICAL REVIEW B, 86 (13): 134426. ISSN 1098-0121,
Full text not available from this repository.Abstract
Spin-wave-mediated vortex core reversal is investigated using x-ray magnetic circular dichroism in a time-resolved scanning transmission x-ray microscope in combination with micromagnetic simulations. The evolution of magnetization dynamics in Permalloy disks is imaged after excitation with one-period rotating rf-field bursts. Selective unidirectional switching of the vortex polarity is achieved due to different switching thresholds for clockwise and counterclockwise excitations. A lower limit of about 200 ps for the unidirectional switching time after the onset of a one-period burst is found for the geometry of our disks (1.6 mu m in diameter and 50 nm in thickness).
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | EXCITATION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics Physics > Institute of Experimental and Applied Physics > Chair Professor Back > Group Christian Back |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 05 May 2020 05:56 |
| Last Modified: | 05 May 2020 05:56 |
| URI: | https://pred.uni-regensburg.de/id/eprint/17924 |
Actions (login required)
 |
View Item |
