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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Open-shell benzenoid polycyclic aromatic hydrocarbons, known as magneticnanographenes, exhibit unconventional p-magnetism arising from topologicalfrustration or strong electronic-electron (e-e) interaction. Imprintingmultiple strongly entangled spins into polyradical nanographenes creates amajor paradigm shift in realizing non-trivial collective quantum behaviors andexotic quantum phases in organic quantum materials. However, conventionaldesign approaches are limited by a single magnetic origin, which can restrictthe number of correlated spins or the type of magnetic ordering in open-shellnanographenes. Here, we present a novel design strategy combing topologicalfrustration and e-e interactions to fabricate the largest fully-fusedopen-shell nanographene reported to date, a 'butterfly'-shaped tetraradical onAu(111). We employed bond-resolved scanning tunneling microscopy and spinexcitation spectroscopy to unambiguously resolve the molecular backbone andreveal the strongly correlated open-shell character, respectively. Thisnanographene contains four unpaired electrons with both ferromagnetic andanti-ferromagnetic interactions, harboring a many-body singlet ground state andstrong multi-spin entanglement, which can be well described by many-bodycalculations. Furthermore, we demonstrate that the nickelocene magnetic probecan sense highly-correlated spin states in nanographene. The ability to imprintand characterize many-body strongly correlated spins in polyradicalnanographenes not only presents exciting opportunities for realizingnon-trivial quantum magnetism and phases in organic materials but also pavesthe way toward high-density ultrafast spintronic devices and quantuminformation technologies.

Highly-Entangled Polyradical Nanographene with Coexisting Strong Correlation and Topological Frustration