Work

Controlling the nucleation and annihilation of skyrmions with magnetostatic interactions

Year: 2019

Type: article

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 Néel 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.

Source: Applied Physics Letters

DOI: 10.1063/1.5099898

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

Institutions: Universidad de Santiago de Chile, Center for the Development of Nanoscience and Nanotechnology, University of Chile

Language: English

Topic: Magnetic properties of thin films

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Fondo Nacional de Desarrollo Científico y Tecnológico

Awards: G6777014813, G7546030552, G7684749430, G7818040538