Inducing Kondo screening of vacancy magnetic moments in graphene with gating and local curvature.

ABSTRACT: In normal metals the magnetic moment of impurity-spins disappears below a characteristic Kondo temperature which marks the formation of a cloud of conduction-band electrons that screen the local-moment. In contrast, moments embedded in insulators remain unscreened at all temperatures. What then is the fate of magnetic-moments in intermediate, pseudogap systems, such as graphene? Theory predicts that coupling to the conduction-band electrons will drive a quantum phase transition between a local-moment phase and a Kondo-screened phase. However, attempts to experimentally confirm this prediction and its intriguing consequences, such as electrostatically tunable magnetic-moments, have been elusive. Here we report the observation of Kondo-screening and the quantum phase-transition between scree

SUBMITTER: Jiang Y 

PROVIDER: S-EPMC6002358 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature