Current flow past an etched barrier : field emission from a two-dimensional electron gas

@inproceedings{Cobden1998CurrentFP,
  title={Current flow past an etched barrier : field emission from a two-dimensional electron gas},
  author={David H Cobden and Graham M. Pilling and Raghuveer Parthasarathy and Paul L. McEuen and I. M. Castleton and Edmund H. Linfield and David A. Ritchie and G. A. C. Jones},
  year={1998}
}
– We find that, under appropriate conditions, electrons can pass a barrier etched across a two-dimensional electron gas (2DEG) by field emission from the GaAs/AlGaAs heterojunction into a second, low-density 2DEG formed deep in the substrate. The current-voltage characteristics exhibit a rapid increase in the current at the field emission threshold and… CONTINUE READING