Angle-resolved photoemission spectroscopy (ARPES)

Angle-resolved photoemission spectroscopy (ARPES) is a technique used by scientists to study the electronic structure of materials. By shining high-energy light (like ultraviolet or X-ray) onto a material, electrons are ejected. Measuring these electrons’ energies and the angles at which they leave reveals information about how electrons behave inside the material. This helps researchers understand properties like conductivity, superconductivity, and the behavior of electrons in complex systems. In essence, ARPES provides a detailed map of the material’s electronic landscape, crucial for developing advanced electronic devices and new materials.