TY - JOUR
T1 - Gate-voltage dependence of inter dot coupling and Aharanov-Bohm oscillation in laterally coupled vertical double dot
AU - Hatano, Tsuyoshi
AU - Stopa, Michael
AU - Izumida, Wataru
AU - Yamaguchi, Tomohiro
AU - Ota, Takeshi
AU - Tarucha, Seigo
N1 - Funding Information:
We thank T. Sato, S. Teraoka, T. Inoshita, K. Yamada, A. Shibatomi, T. Maruyama, K. Ono, S. Amaha, Y. Nishi, S. Sasaki and D. G. Austing for experimental help and useful discussions. Part of this work is financially supported by the Grant-in-Aid for Scientific Research A (No. 40302799) and by CREST-JST.
PY - 2004/4
Y1 - 2004/4
N2 - We fabricated laterally coupled vertical double-dot devices and measured their electrical transport properties. In these devices, two dots are laterally coupled in parallel and connected to a common source, and drain contacts placed above, and below the two dots. The number of electrons in each dot and the inter-dot tunnel coupling are all tunable. The inter-dot tunnel coupling was changed between the weak and strong coupling regimes, as a function of gate voltage placed between two dots. When a magnetic field was applied parallel to the plane of the two dots and source/drain contacts, we observed oscillations of the current (Aharanov-Bohm oscillation) in the weak coupling regime (for a different device).
AB - We fabricated laterally coupled vertical double-dot devices and measured their electrical transport properties. In these devices, two dots are laterally coupled in parallel and connected to a common source, and drain contacts placed above, and below the two dots. The number of electrons in each dot and the inter-dot tunnel coupling are all tunable. The inter-dot tunnel coupling was changed between the weak and strong coupling regimes, as a function of gate voltage placed between two dots. When a magnetic field was applied parallel to the plane of the two dots and source/drain contacts, we observed oscillations of the current (Aharanov-Bohm oscillation) in the weak coupling regime (for a different device).
KW - Aharanov-Bohm oscillation
KW - Tunnel coupling
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U2 - 10.1016/j.physe.2003.12.063
DO - 10.1016/j.physe.2003.12.063
M3 - Conference article
AN - SCOPUS:1842683845
VL - 22
SP - 534
EP - 537
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
SN - 1386-9477
IS - 1-3
T2 - 15th International Conference on ELectronic Propreties
Y2 - 14 July 2003 through 18 July 2003
ER -