Nanoscale spintronic oscillators based on the excitation of confined soliton modes

G. Finocchio (1) , V. Puliafito (1) , S. Komineas (2) , L. Torres (3) , O. Ozatay (4) , Thomas Hauet (5) , B. Azzerboni (1)

1 University of Messina
2 UOC - University of Crete [Heraklion]
3 Universidad de Salamanca
4 Boǧaziçi üniversitesi = Boğaziçi University [Istanbul]
5 IJL - Institut Jean Lamour

This paper demonstrates how to excite complex soliton modes in nanomagnets with perpendicular to plane magnetic anisotropy driven by the non-uniform injection of a spin-polarized current. We addressed the study toward two different scenarios, in the first the excitation of two rotating bubble/antibubble pairs is predicted, in the second one, by means of the topological density, we characterized the dissipative droplet recently measured as single constrained bubble/antibubble pair. Our results are important for the theoretical understanding of how to control the spatial structure of soliton modes for application in spintronics, magnonics, and domain wall devices.

Domaines: Science des matériaux [cond-mat.mtrl-sci]

G. Finocchio, V. Puliafito, S. Komineas, L. Torres, O. Ozatay, et al.. Nanoscale spintronic oscillators based on the excitation of confined soliton modes. Journal of Applied Physics, 2013, 114, pp.163908. ⟨10.1063/1.4827384⟩. ⟨hal-01276625⟩