Abstract
A system of two parallel constrictions in a two-dimensional hole gas has been studied. At zero magnetic-field conductance quantization is observed through the individual constrictions. At high magnetic fields Aharonov-Bohm oscillations result from resonant tunneling through states encircling the repulsive potential between the constrictions. The oscillations demonstrate directly phase-coherent transport of holes.
- Received 29 November 1993
DOI:https://doi.org/10.1103/PhysRevB.49.5101
©1994 American Physical Society