Single-electron transport through a single donor at elevated temperatures

Abstract

We showed that, in nanoscale doped SOIFETs, new current peaks become observable as temperature is increased. For smallest 1-disk devices, a final new tunneling current peak has been observed even at T = 100 K, indicating that such patterned-channel devices are suitable for high temperature tunneling operation. Ionization energy was estimated to be about 5 times larger than for bulk Si, due to dielectric and confinement effect.