English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Skyrmions are whirl like topological spin objects with high potential forfuture magnetic data storage. It is a fundamental question, relevant for bothbasic research and application, if a ferroelectric (FE) polarization can beassociated with their magnetic texture and if these objects can be manipulatedby electric fields. Here, we study the interplay between magnetism and electricpolarization in the lacunar spinel GaV4S8, which undergoes a structuraltransition associated with orbital ordering at 44 K and reveals a complexmagnetic phase diagram below 13 K, including a ferromagnetic (FM), cycloidal,and N\'eel-type skyrmion lattice (SkL) phase. We found that the orbitallyordered phase of GaV4S8 is FE with a sizable polarization of ~1 {\mu}C/cm2.Moreover, we observed spin-driven excess polarizations in all magnetic phasesand, hence, GaV4S8 hosts three different multiferroic phases with coexistingpolar and magnetic order. These include the SkL phase where we predict a strongspatial modulation of the FE polarization close to the skyrmion cores. Bytaking into account the crystal symmetry and spin patterns of the magneticallyordered phases, we identify the exchange striction as the main microscopicmechanism behind the spin-driven FE polarization in each multiferroic phase.Since GaV4S8 is unique among the known SkL host materials due to its polarcrystal structure and the observed strong magnetoelectric effect, this study isan important step towards the non-dissipative electric-field control ofskyrmions.

Multiferroicity and skyrmions carrying electric polarization in GaV4S8