Fabrication and characterization of a laterally coupled vertical triple quantum dot device

被引：26

作者：

Amaha, Shinichi ^{[1
]}

Hatano, Tsuyoshi ^{[1
]}

Kubo, Toshihiro ^{[1
]}

Tokura, Yasuhiro ^{[1
,2
]}

Austing, David Guy ^{[3
]}

Tarucha, Seigo ^{[1
,4
]}

机构：

[1] ICORP JST, Quantum Spin Informat Project, Atsugi, Kanagawa 2430198, Japan

[2] NTT Corp, NTT Basic Res Labs, Atsugi, Kanagawa 2430198, Japan

[3] Natl Res Council Canada, Inst Microstruct Sci M50, Ottawa, ON K1A 0R6, Canada

[4] Univ Tokyo, Sch Engn, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2008年 / 40卷 / 05期

关键词：

quantum dots; quantum dot molecules; triple quantum dots; stability diagram; coulomb diamonds;

D O I：

10.1016/j.physe.2007.09.205

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Laterally coupled vertical triple quantum dots (tQDs) are newly fabricated and their transport properties are investigated. Our device consists of three pillars, each with a separate gate electrode, fabricated from a double-barrier structure and arranged in an equilateral triangular arrangement, with a common source and drain electrodes. The measured conductance on sweeping the two gate voltages shows three series of Coulomb oscillations and this indicates that the tQDs in our device are formed in the intended manner. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1322 / 1324

页数：3

共 19 条

[1] Magnetic field induced transitions in the few-electron ground states of artificial molecules [J].

Amaha, S ;

Austing, DG ;

Tokura, Y ;

Muraki, K ;

Ono, K ;

Tarucha, S .

SOLID STATE COMMUNICATIONS, 2001, 119 (4-5) :183-190

[2] Quantum dot molecules [J].

Austing, DG ;

Honda, T ;

Muraki, K ;

Tokura, Y ;

Tarucha, S .

PHYSICA B-CONDENSED MATTER, 1998, 249 :206-209

[3] GaAs/AlGaAs/InGaAs vertical triple barrier single electron transistors [J].

Austing, DG ;

Honda, T ;

Tarucha, S .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 1997, 36 (3B) :1667-1671

[4] Stability diagram of a few-electron triple dot [J].

Gaudreau, L. ;

Studenikin, S. A. ;

Sachrajda, A. S. ;

Zawadzki, P. ;

Kam, A. ;

Lapointe, J. ;

Korkusinski, M. ;

Hawrylak, P. .

PHYSICAL REVIEW LETTERS, 2006, 97 (03)

[5] Single-electron delocalization in hybrid vertical-lateral double quantum dots [J].

Hatano, T ;

Stopa, M ;

Tarucha, S .

SCIENCE, 2005, 309 (5732) :268-271

[6] Electron-spin and electron-orbital dependence of the tunnel coupling in laterally coupled double vertical dots [J].

Hatano, T ;

Stopa, M ;

Yamaguchi, T ;

Ota, T ;

Yamada, K ;

Tarucha, S .

PHYSICAL REVIEW LETTERS, 2004, 93 (06) :066806-1

[7] Voltage-controlled coded qubit based on electron spin [J].

Hawrylak, P ;

Korkusinski, M .

SOLID STATE COMMUNICATIONS, 2005, 136 (9-10) :508-512

[8] Spin charging sequences in three colinear laterally coupled vertical quantum dots [J].

Kim, J. ;

Melnikov, D. V. ;

Leburton, J. P. ;

Austing, D. G. ;

Tarucha, S. .

PHYSICAL REVIEW B, 2006, 74 (03)

[9] Magnetically tunable Kondo-Aharonov-Bohm effect in a triangular quantum dot [J].

Kuzmenko, T ;

Kikoin, K ;

Avishai, Y .

PHYSICAL REVIEW LETTERS, 2006, 96 (04)

[10] Determination of the phase shifts for interacting electrons connected to reservoirs [J].

Oguri, A ;

Nisikawa, Y ;

Hewson, AC .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2005, 74 (09) :2554-2562

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