Anomalously large capacitance of a plane capacitor with a two-dimensional electron gas
Anomalously large capacitance of a plane capacitor with a two-dimensional electron gas
In electronic devices where a two-dimensional electron gas (2DEG) comprises one or both sides of a plane capacitor, the resulting capacitance $C$ can be larger than the "geometric capacitance" $C_g$ determined by the physical separation $d$ between electrodes. This larger capacitance is known to result from the Coulomb correlations between …