Time-resolved measurement of spin-wave spectra in CoO capped Co(t)Pt(7Å) n-1 Co(t) multilayer systems

S. Pal, B. Rana, S. Saha, R. Mandal, O. Hellwig, J. Romero-Vivas, S. Mamica, J. W. Klos, M. Mruczkiewicz, M. L. Sokolovskyy, M. Krawczyk, A. Barman

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Abstract

We present an all-optical time-resolved measurement of dipole-exchange spin wave spectra in a series of CoO capped Co(t)Pt(7Å) n-1 Co(t) multilayer systems, where the total Co moment (n × t) is constant. In general, the spectra consist of two intense peaks and additional lower intensity peaks. The observed spin wave modes are modeled by a discrete dipole approximation. The frequency of the spin wave bands depends significantly upon the magnetic anisotropy and the lattice spacing between planes. Both symmetric and anti-symmetric modes are observed from the calculation of the spin-wave profiles across the multilayer in the out-of-plane direction.

Original languageEnglish
Article number07C507
JournalJournal of Applied Physics
Volume111
Issue number7
DOIs
Publication statusPublished - 2012 Apr 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Pal, S., Rana, B., Saha, S., Mandal, R., Hellwig, O., Romero-Vivas, J., Mamica, S., Klos, J. W., Mruczkiewicz, M., Sokolovskyy, M. L., Krawczyk, M., & Barman, A. (2012). Time-resolved measurement of spin-wave spectra in CoO capped Co(t)Pt(7Å) n-1 Co(t) multilayer systems. Journal of Applied Physics, 111(7), [07C507]. https://doi.org/10.1063/1.3672857