POSSIBLE OBSERVATION OF AHARONOV-BOHM EFFECT IN A GRAPHENE TUBULE

Recent discovery of metal encapsulated graphene tubules with radii of several nanometers has provided the possibility of observing the prope r Aharonov-Bohm (AB) effect in bound states. A calculation is presente d for the AB effect in a graphene tubule due to the introduction of a magnetized whisker completely inside the tubule such that the tubule i tself experiences no magnetic field. The resulting AB current and AB m agnetic flux in the graphene tubule should be detectable with the pres ently available experimental techniques. Copyright (C) 1996 Published by Elsevier Science Ltd