Spin Vortex Resonance in Non-planar Ferromagnetic Dots

Junjia Ding, Pavel Lapa, Shikha Jain, Trupti Khaire, Sergi Lendinez, Wei Zhang, Matthias B. Jungfleisch, Christian M. Posada, Volodymyr G. Yefremenko, John E. Pearson, Axel Hoffmann, Valentine Novosad

Research output: Contribution to journalArticlepeer-review


In planar structures, the vortex resonance frequency changes little as a function of an in-plane magnetic field as long as the vortex state persists. Altering the topography of the element leads to a vastly different dynamic response that arises due to the local vortex core confinement effect. In this work, we studied the magnetic excitations in non-planar ferromagnetic dots using a broadband microwave spectroscopy technique. Two distinct regimes of vortex gyration were detected depending on the vortex core position. The experimental results are in qualitative agreement with micromagnetic simulations.

Original languageEnglish (US)
Article number25196
JournalScientific reports
StatePublished - May 4 2016
Externally publishedYes

ASJC Scopus subject areas

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