Demonstration of quantized conductance in deeply reactive ion etched In0.53Ga0.47As/InP electron waveguides with in-plane gates
- 10 March 1997
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 70 (10) , 1302-1304
- https://doi.org/10.1063/1.118518
Abstract
Clear conductance quantization at T=4.2 K has been demonstrated in a 140 nm wide and 200 nm long trench-isolated In 0.53 Ga 0.47 As/InP electron waveguide with in-plane gates, using the surrounding two-dimensional electron gas as the gate. It was fabricated using metalorganic vapor phase epitaxy, electron beam lithography, and CH 4 / H 2 reactive ion etching. In a T=20 K measurement on a 60 nm wide and 100 nm long device, only the first conductance plateau of 2e 2 /h was reached.Keywords
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