Skyrmions are topologically protected magnetic solitons which are attracting a lot of interest from either a fundamental or a technological point of view. Skyrmions can behave as static objects, being shifted in a racetrack memory or as dynamical solitons, giving rise to topological droplets. This paper points out that a Néel skyrmion based racetrack memory driven by the spin-Hall effect could be a competitive memory architecture, and that, in nano-contact geometry, the spin-transfer torque, together with the Dzyaloshinskii-Moriya interaction, can excite stationary and non-stationary topological droplets.
Micromagnetic study of skyrmion racetrack and microwave oscillator / Tomasello, Riccardo; Carpentieri, Mario; Puliafito, Vito; Giordano, Anna; Siracusano, Giulio; Azzerboni, Bruno; Finocchio, Giovanni. - (2015). (Intervento presentato al convegno AEIT International Annual Conference: A Sustainable Development in the Mediterranean Area, AEIT 2015 tenutosi a Napoli, Italy nel October 14-16, 2015) [10.1109/AEIT.2015.7415281].
Micromagnetic study of skyrmion racetrack and microwave oscillator
Tomasello, Riccardo;CARPENTIERI, Mario;Puliafito, Vito;
2015-01-01
Abstract
Skyrmions are topologically protected magnetic solitons which are attracting a lot of interest from either a fundamental or a technological point of view. Skyrmions can behave as static objects, being shifted in a racetrack memory or as dynamical solitons, giving rise to topological droplets. This paper points out that a Néel skyrmion based racetrack memory driven by the spin-Hall effect could be a competitive memory architecture, and that, in nano-contact geometry, the spin-transfer torque, together with the Dzyaloshinskii-Moriya interaction, can excite stationary and non-stationary topological droplets.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
