Study predicts the behavior of a Kondo cloud in a superconductor
— Read on phys.org/news/2021-11-behavior-kondo-cloud-superconductor.html

Hybrid nano conductors are systems superconducting typically made up of two or more materials, specialized researchers around the world have found that when a metal contains magnetic impurities, conduction electrons can form a screening cloud, which essentially acts like an “uncovering screen” of the impurity’s spin. This physical phenomenon is known as the Kondo effect and the resulting cloud is referred to as a Kondo cloud...read more by pressing on the above link.