Electrical manifestation of the quantum-confined Stark effect by quantum capacitance response in an optically excited quantum well
Abstract
We have studied the capacitance-voltage characteristics of an optically excited wide quantum well. Both self-consistent simulations and experimental results show the striking quantum contribution to the capacitance near zero bias which is ascribed to the swift decreasing of the overlap between the electron and hole wave functions in the well as the longitudinal field goes up. This quantum capacitance feature is regarded as an electrical manifestation of the quantum-confined Stark effect.
- Publication:
-
Physical Review B
- Pub Date:
- March 2001
- DOI:
- 10.1103/PhysRevB.63.113305
- Bibcode:
- 2001PhRvB..63k3305T
- Keywords:
-
- 73.21.-b;
- 71.70.Ej;
- 84.37.+q;
- 85.60.Gz;
- Electron states and collective excitations in multilayers quantum wells mesoscopic and nanoscale systems;
- Spin-orbit coupling Zeeman and Stark splitting Jahn-Teller effect;
- Measurements in electric variables;
- Photodetectors