Electrostatic correction to the square-potential model of nanostructures significantly affects current resonances

Depletion of carriers in nanostructures generates an electrostatic correction to the square potential model. This correction changes the tunneling probability and consequently affects current resonances. We analyze this effect numerically for the double-barrier quantum well (DBQW) at various temperatures and carrier densities, and conclude that the electrostatic correction significantly affects the resonant voltage, the current at resonance, the peak-to-valley ratio, and may even cause disappearance of the lowest resonance.