Speakers: Fabio Donati, Christoph Wolf, IBS Center for Quantum Nanoscience at Ewha Womans University
In this module, we introduce the concept of effective spin Hamiltonians and magnetic multiplet calculations. We show how to use these in order to accurately predict the energy levels of an iron ad-atom on a magnesium-oxide surface by using density functional theory (DFT) and a multi-orbital Hubbard solver.
More details about spin excitations can be found in the module “Describing the Spectroscopic Features of Spins on Surfaces Probed with STM“, and the mechanism driving ESR in STM is explained in more detail in the module “The Principle of ESR-STM“.
Hi Chris, you mention that for the Fe atom, the ESR transition is a delta-z = 4 transition, which is really weird. You also mention that this will be covered in another tutorial but I can’t find that. Can you help? Thanks!