TY - JOUR
T1 - Single-electron transport through an individual InAs SAQD embedded in a graded-dope semiconductor nano-pillar
AU - Sato, T.
AU - Yamaguchi, T.
AU - Izumida, W.
AU - Tarucha, S.
AU - Song, H. Z.
AU - Miyazawa, T.
AU - Nakata, Y.
AU - Ohshima, T.
AU - Yokoyama, N.
N1 - Funding Information:
The authors thank Dr. M. Stopa, Dr. T. Inoshita and Dr. T. Ota for valuable discussions. This research was jointly supported by IT Program, MEXT.
PY - 2004/3
Y1 - 2004/3
N2 - By using the semiconductor nano-pillar with a graded-dope configuration, we implemented the measurement for a single-electron transport through an individual InAs self-assembled quantum dot (SAQD). An atomic-force microscope observation showed that the SAQD had a disk-like shape with a diameter of ~30 nm. We succeeded in observing a significant diamagnetic shift of the Coulomb oscillation peak under the magnetic field applied perpendicular to the disk plane. The measurement gave us a lateral confinement energy of 14 meV and an electron effective mass of 0.039, which provided us with quantitative evidence that the constituent material of the observed quantum dot originates from the InAs SAQD.
AB - By using the semiconductor nano-pillar with a graded-dope configuration, we implemented the measurement for a single-electron transport through an individual InAs self-assembled quantum dot (SAQD). An atomic-force microscope observation showed that the SAQD had a disk-like shape with a diameter of ~30 nm. We succeeded in observing a significant diamagnetic shift of the Coulomb oscillation peak under the magnetic field applied perpendicular to the disk plane. The measurement gave us a lateral confinement energy of 14 meV and an electron effective mass of 0.039, which provided us with quantitative evidence that the constituent material of the observed quantum dot originates from the InAs SAQD.
KW - Fock-Darwin state
KW - Quantum dot
KW - Self-assembled InAs dot
KW - Single-electron transport
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U2 - 10.1016/j.physe.2003.11.070
DO - 10.1016/j.physe.2003.11.070
M3 - Conference article
AN - SCOPUS:1642359527
SN - 1386-9477
VL - 21
SP - 506
EP - 510
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
IS - 2-4
T2 - Proceedings of the Eleventh International Conference on Modulation (MSS11)
Y2 - 14 July 2003 through 18 July 2003
ER -