An optical method to polarize free electrons in a laboratory setting
— Read on phys.org/news/2023-06-optical-method-polarize-free-electrons.html

….Polarized electrons are electrons in which spins have a “preferred” orientation or are preferentially oriented in a specific direction. The realization of these electrons has notable implications for physics research, as it can pave the way toward the creation of promising materials and enable new experiments.– he said.