Magnetic Droplet Solitons

Magnetic dropletsMagnetic droplets are nanoscale, non-topological, dynamical solitonsSolitons that can be nucleated in different spintronic devices, such as spin-torque nano-oscillators (STNOs)Spin torque nano-oscillator (STNO) and spin Hall nano-oscillators (SHNOs)Spin-Hall nano-oscillator (SHNO). This chapter first briefly discusses the theory of spin current driven dissipative magnetic droplets in ferromagnetic thin films with uniaxial anisotropy. We then thoroughly review the research literature on magnetic dropletsMagnetic droplets and their salient features, as measured using electrical, microwave, and synchrotron techniques, and as envisaged by micromagnetic simulationsMicromagnetic simulations. We also touch upon a closely related soliton, the dynamical skyrmionDynamical skyrmion. Finally, we present an outlook of new routes in droplet science.