A single-hole transistor is patterned in a p-Si/SiGe quantum well by applyi
ng voltages to nanostructured top gate electrodes. Gating is achieved by ox
idizing the etched semiconductor surface and the mesa walls before evaporat
ion of the top gates. Pronounced Coulomb blockade effects are observed at s
mall coupling of the transistor island to source and drain. (C) 2001 Americ
an Institute of Physics.