Measuring the local quantum capacitance of graphene using a strongly coupled graphene nanoribbon
Measuring the local quantum capacitance of graphene using a strongly coupled graphene nanoribbon
We present electrical transport measurements of a van-der-Waals heterostructure consisting of a graphene nanoribbon separated by a thin boron nitride layer from a micron-sized graphene sheet. The interplay between the two layers is discussed in terms of screening or, alternatively, quantum capacitance. The ribbon can be tuned into the transport …