Work

Statics and dynamics of twisted skyrmion tubes in frustrated magnets

Year: 2025

Type: article

Abstract: Stable three-dimensional topological skyrmion structures in frustrated magnets are investigated. The texture exhibits a helicoid pattern along the vertical direction, described by a position-dependent helicity, which interpolates between Neel- and hedgehoglike two-dimensional skyrmions, characterized by the Hopf index, and is referred to as ``twisted skyrmion tubes'' (TSkTs). The stability and topology of TSkTs are achieved by competing next-nearest-neighbor exchange interactions, the thickness of the magnet, and the applied magnetic field. The dynamical behavior of a twisted structure in frustrated magnets is determined. Specifically, we derive that the helicity dynamics of the TSkT can be driven by an electric current resulting from spin-orbit torque interaction. Furthermore, we address the study of the electronic scattering problem using a spin-orbit-torque-driven TSKT, which offers promising applications for low-power storage nanodevices and nanobatteries with enhanced control.

Source: Physical review. B./Physical review. B

DOI: 10.1103/tz4v-s5m5

Authors: Carlos Saji, Eduardo Saavedra, Vagson L. Carvalho-Santos, Alvaro S. Nunez, Roberto E. Troncoso

Institutions: University of Chile, Universidad de Santiago de Chile, Universidade Federal de Viçosa, University of Tarapacá

Language: English

Topic: Magnetic properties of thin films

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Conselho Nacional de Desenvolvimento Científico e Tecnológico, Fondo Nacional de Desarrollo Científico y Tecnológico

Award: G6206335318