Demonstration of angular-momentum-resolved electron energy-loss spectroscopy.

ABSTRACT: Rotational invariance is a fundamental aspect of symmetry in scattering processes from atomic potentials. Here, we present an approach for measuring orbital angular momentum (OAM), a key descriptor of rotational symmetry, during measurements of atomic transitions. We use an electron optical OAM sorter in combination with electron energy-loss spectroscopy and model-based fitting to separately measure the π* and σ* antibonding transitions in hexagonal boron nitride on the atomic scale. This approach also offers prospects for efficient and atomically-resolved magnetic chiral dichroism measurements.

SUBMITTER: Tavabi AH 

PROVIDER: S-EPMC12271546 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature