WEDNESDAY 14:45
SPIN WAVES - A FINE PROBE FOR ITINERANT FERROMAGNETISM, AND AN ALTERNATIVE FOR ELECTRONIC DEVICES
Vincent Vlaminck,
Colegio de Ciencias e Ingeniería, Universidad San Francisco de Quito, Quito, Ecuador
ABSTRACT
For decades, magnetization dynamics has continued to generate a vivid interest for its numerous applications in microwave electronics and telecommunication. More recently, the non-uniform dynamics of magnetization (e.g. spin waves) has sparked a renewed attraction, suggesting alternative solutions for computation functionalities 1,2. Furthermore, spin waves also appear to be a formidable tool to characterize spin transport in ferromagnetic metals 3-5. In this presentation, I will present in the first part how the spin wave Doppler technique enables to probe independently some of the different spin-dependent scattering mechanisms. In the second part, I will review some of the major advances in magnonics and present the first experimental evidences of a spin wave Fresnel diffraction in continuous layer of thin YIG films.
[1] S. O. Demokritov, A. N. Slavin, Magnonics, From Fundamentals to Applications, Springer (2012).
[2] A.V. Chumak el al, Nature Physics 11, 453-461 (2015).
[3] V. Vlaminck, M. Bailleul, Science 322, 410-413 (2008).
[4] M. Zhu, C.L. Dennis, R. D. McMichael, Phys. Rev. B 81, 140407(R) (2010)
[5] M. Haidar, M. Bailleul Phys. Rev. B 88, 054417 (2013)