Phys.org April 15, 2024
Conventional design approaches are typically limited to a single magnetic origin, which can restrict the number of correlated spins or the type of magnetic ordering in open shell nanographenes. An international team of researchers (Singapore, Czech Republic) developed a design strategy that combined topological frustration and electron–electron interactions to fabricate a large fully fused ‘butterfly’-shaped tetraradical nanographene on Au(111). They resolved the molecular backbone and revealed the strongly correlated open-shell character. The nanographene contained four unpaired electrons with both ferromagnetic and anti-ferromagnetic interactions, harbouring a many-body singlet ground state and strong multi-spin entanglement. They studied the magnetic properties and spin states in the nanographene using a nickelocene magnetic probe. According to the researchers the ability to imprint and characterize many-body strongly correlated spins in polyradical nanographenes paves the way for future advancements in quantum information technologies… read more. TECHNICAL ARTICLEÂ
Conceptual design principle of second-generation… Credit: Nature Chemistry, 19 February, 2024Â