Electrical control of magnon propagation in multiferroic BiFeO3 films

Abstract

The spin wave spectra of multiferroic BiFeO3 films is calculated using a phenomenological Landau theory that includes magnetostatic effects. The lowest frequency magnon dispersion is shown to be quite sensitive to the angle between spin wave propagation vector and the Neel moment. Since electrical switching of the Neel moment has recently been demonstrated in this material, the sensitivity of the magnon dispersion permits direct electrical switching of spin wave propagation. This effect can be used to construct spin wave logical gates without current pulses, potentially allowing reduced power dissipation per logical operation.

References in corpus (2)

• Weak ferromagnetism and magnetoelectric coupling in bismuth ferrite
• Structural distortion and magnetism of BiFeO3 epitaxial thin films: a Raman spectroscopy and neutron diffraction study

Cited by in corpus (5)

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• Electromagnons in multiferroic RMn2O5 compounds and their microscopic origin
• Nonvolatile Electric Field Control of Thermal Magnons in the Absence of an Applied Magnetic Field
• Flipping of electronic spins in BiFeO${}_3$ via chiral $d-d$ excitations