Individual quantum dot spectroscopy probed by a cryogenic scanning probe

Mingjiao Liu; Changyi Li; Mampazhy, Arun; Chia-Hung Yang; Ming-Jey Yang
June 2005
AIP Conference Proceedings;2005, Vol. 772 Issue 1, p653
Academic Journal
In this paper we report the energy spectra of single electrons confined in a single InAs quantum dot, and single holes confined in a single GaSb quantum dot. These quantum dots are fabricated by laterally reducing the diameter of resonant tunneling (or resonant interband tunneling) diodes. The dc current-voltage characteristics at 4.2K is taken by a cryogenic scanning probe, that during measurement is in direct physical contact with the top electrode. © 2005 American Institute of Physics


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