Skip to main content
eScholarship
Open Access Publications from the University of California

UC Davis

UC Davis Previously Published Works bannerUC Davis

Chirality control via double vortices in asymmetric Co dots

Abstract

Reproducible control of the magnetic vortex state in nanomagnets is of critical importance. We report onchirality control by manipulating the size and/or thickness of asymmetric Co dots. Below a critical diameterand/or thickness, chirality control is achieved by the nucleation of a single vortex. Interestingly, above thesecritical dimensions, chirality control is realized by the nucleation and subsequent coalescence of two vortices,resulting in a single vortex with the opposite chirality as found in smaller dots. Micromagnetic simulations andmagnetic force microscopy highlight the role of edge-bound half vortices in facilitating the coalescence process.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content
For improved accessibility of PDF content, download the file to your device.
Current View