Controlling the nucleation and annihilation of skyrmions with magnetostatic interactions

Vidal-Silva, N.; Riveros, A.; Tejo, F.; Escrig, J.; Altbir, D.

Abstract

Skyrmions have become one of the most visited topics during the last decade in condensed matter physics. In this work, and by means of analytical calculations and micromagnetic simulations, we explore the effect of the magnetostatic field generated by a magnetic tip on the stability of skyrmions. Our results show that the interaction energy between the tip and the skyrmion plays a fundamental role in the stabilization of Neel skyrmions confined in nanodisks, allowing its nucleation and annihilation and also providing precise control of its size and polarity. Based on our results, we propose a very simple and cyclic method to nucleate and annihilate skyrmions, as well as to control their polarity and chirality. This proposal could open possibilities for logic devices taking advantage of all the degrees of freedom that skyrmionic textures have.

Más información

Título según WOS: Controlling the nucleation and annihilation of skyrmions with magnetostatic interactions
Título según SCOPUS: Controlling the nucleation and annihilation of skyrmions with magnetostatic interactions
Título de la Revista: APPLIED PHYSICS LETTERS
Volumen: 115
Número: 8
Editorial: AMER INST PHYSICS
Fecha de publicación: 2019
Idioma: English
DOI:

10.1063/1.5099898

Notas: ISI, SCOPUS