Magnonics: Of Spins and Waves

Spin waves are actively explored as signal and data carriers within future devices of magnonics, spintronics and their spinouts across discipline boundaries. However, even best-laid device schemes often go awry when faced with realities of physics of spin waves: the non-linearity and anisotropy of the magnonic dispersion relation, the non-locality and chirality of spin waves and their coupling fields, and the generic complexity of micromagnetics and associated graded magnonic landscapes. In my talk, I will present some illustrations of such exotic wave phenomena observable in magnonics. I will also argue that, once understood, this awryness of spin waves could promise remarkable benefits for both existing and future device concepts within magnonics and beyond.