Quantum capacitance measurements of electron-hole asymmetry and next-nearest-neighbor hopping in graphene
/ Authors
/ Abstract
the highest theoretical values. Here, we report dedicated measurements of the density of states in graphene by using high-quality capacitance devices. The density of states exhibits a pronounced electron-hole asymmetry that increases linearly with energy. This behavior yields t � ≈− 0.3 eV ±15%, in agreement with the high end of
Journal: Physical Review B