Detection of domain wall eigenfrequency in infinity-shaped magnetic nanostructures

Mahdi Jamali, Kulothungasagaran Narayanapillai, Jae Hyun Kwon, Hyunsoo Yang

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3 Scopus citations

Abstract

The dynamics of a magnetic infinity-shaped nanostructure has been experimentally studied by two different techniques such as the sinusoidal resonance excitation and the damped short pulse excitation to measure the eigenfrequency of domain walls. Direct observation of the magnetic domain wall nucleation has been measured in the frequency domain. Electrical measurements of the domain wall dynamics in the frequency domain reveal the existence of multi-eigenmodes for large excitation amplitudes. The time-resolved measurements show that the frequency of the damped gyration is similar to that of the frequency domain and indicate coexistence of spin wave excitations.

Original languageEnglish (US)
Article number062401
JournalApplied Physics Letters
Volume101
Issue number6
DOIs
StatePublished - Aug 6 2012

Bibliographical note

Funding Information:
This work is supported by the Singapore National Research Foundation under CRP Award No. NRF-CRP 4-2008-06.

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