Abstract
We report the Kondo effect in graphene quantum dots. We fabricated graphene quantum dots using CVD graphene. We measured the graphene quantum dots at 20 mK in a dilution refrigerator. We detected a zero-bias conductance peak in the Coulomb blockade regime. The zero-bias conductance peak was suppressed under magnetic fields, which indicates the Kondo effect. We evaluated the Kondo temperatures of 4.8 K from the zero-bias peak and 3.2 K from the tunnel coupling and the charging energy.
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