Stabilization and control of topological magnetic solitons via magnetic nanopatterning of exchange bias systems
Abstract
Stabilizing and manipulating topological magnetic quasiparticles in thin films is of great interest for potential applications in data storage and information processing. Here, we present a strategy for stabilizing magnetic vortices and Bloch lines with controlled position, vorticity, and chirality in a continuous exchange bias system. By tailoring vectorially the unidirectional anisotropy of the system at the nanoscale, via thermally assisted magnetic scanning probe lithography, we show experimentally and via micromagnetic simulations the non-volatile creation of vortex-antivortex pairs. In addition, we demonstrate the deterministic stabilization of cross and circular Bloch lines within patterned Néel magnetic domain walls. This work enables the implementation of complex functionalities based on the control of tailored topological spin-textures in spintronic and magnonic nanodevices.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 15, 2018
- Source ID
- 10.1063/1.5047222
Entities
People
- Annalisa Calò
- Armin W. Knoll
- Daniela Petti
- Edoardo Albisetti
- Elisa Riedo
- Martin Spieser
Organizations
- CUNY Graduate School and University Center
- Horizon 2020
- International Business Machines Corporation (Armonk, NY)
- National Science Foundation
- New York University
- United States Army
- United States Department of Energy