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

We evaluate the spin density oscillations arising in quantum spin Hallquantum dots created via two localized magnetic barriers. The combined presenceof magnetic barriers and spin-momentum locking, the hallmark of topologicalinsulators, leads to peculiar phenomena: a half-integer charge is trapped inthe dot for antiparallel magnetization of the barriers, and oscillations appearin the in-plane spin density, which are enhanced in the presence of electroninteractions. Furthermore, we show that the number of these oscillations isdetermined by the number of particles inside the dot, so that the presence orthe absence of the fractional charge can be deduced from the in-plane spindensity. We show that when the dot is coupled with a magnetized tip, thespatial shift induced in the chemical potential allows to probe these peculiarfeatures.

Coulomb blockade microscopy of spin density oscillations and fractional charge in quantum spin Hall dots