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

The mesoscopic Stoner instability is an intriguing manifestation of symmetrybreaking in isolated metallic quantum dots, underlined by the competitionbetween single-particle energy and Heisenberg exchange interaction. Here westudy this phenomenon in the presence of tunnel coupling to a reservoir. Weanalyze the spin susceptibility of electrons on the quantum dot for differentvalues of couplings and temperature. Our results indicate the existence of aquantum phase transition at a critical value of the tunneling coupling, whichis determined by the Stoner-enhanced exchange interaction. This quantum phasetransition is a manifestation of the suppression of the Coleman-Weinbergmechanism of symmetry breaking, induced by coupling to the reservoir.

Mesoscopic Stoner instability in open quantum dots: suppression of Coleman-Weinberg mechanism by electron tunneling