Spin Waves in an Arbitrary Ferromagnetic Nanosystem with a Translational Symmetry. Nanotube with a Round Cross-section. Nanotube with an Elliptic Cross-section

Authors V.V. Kulish

National Technical University of Ukraine “KPI”, 37, Peremogy prosp., 03056 Kyiv, Ukraine

Е-mail kulish_volv@ukr.net
Issue Volume 6, Year 2014, Number 2
Dates Received 25 March 2014; revised manuscript received 05 June 2013; published online 20 June 2014
Citation V.V. Kulish, J. Nano- Electron. Phys. 6 No 2, 02021 (2014)
PACS Number(s) 62.23.St, 75.30.Ds, 75.75. + a
Keywords Spin waves, Nanomagnetism, Ferromagnetic nanotube, Ferromagnetic nanowire, Dipole-exchange theory.
Annotation In the paper, spin waves in an arbitrary translational-symmetry composite nanosystem containing an “easy axis” ferromagnet are studied. For such a system, equation for the magnetic potential in magnetostatic approximation is obtained taking into account the magnetic dipole-dipole interaction, the exchange interactionб and the anisotropy effects. The theory that allows to obtain the dispersion relation and the transverse wavenumber spectrum for a particular system of this type is proposed; dispersion relation for a system with small transverse size is obtained. The dispersion relation and the transverse wavenumber spectrum are written for nanotubes with round and elliptic cross-sections.

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