Direct measurement of the density of states of a two-dimensional electron gas
Abstract
We present a direct measurement of the density of states of a two-dimensional electron gas in a quantizing magnetic field. By measuring the magnetocapacitance of modulation-doped GaAs-(AlGa)As heterostructures at low frequencies, we have observed quantum oscillations resulting from changes in the density of states alone.
- Publication:
-
Physical Review B
- Pub Date:
- August 1985
- DOI:
- 10.1103/PhysRevB.32.2696
- Bibcode:
- 1985PhRvB..32.2696S