Exchange interactions and intermolecular hybridization in a spin-1/2 nanographene dimer
Researchers studied exchange interactions and hybridization in a spin-1/2 nanographene dimer to understand spin physics for quantum technologies. They used inelastic electron tunneling spectroscopy to find singlet-triplet excitations from interphenalenyl exchange, showing that third-neighbor hopping is key for kinetic exchange, and how substrate coupling modifies these spin energies.