Distortions of the coulomb blockade conductance line in scanning gate measurements of inas nanowire based quantum dots

被引：5

作者：

Zhukov, A. A. ^{[1
]}

Volk, Ch. ^{[2
,3
]}

Winden, A. ^{[2
,3
]}

Hardtdegen, H. ^{[2
,3
]}

Schaepers, Th. ^{[2
,3
,4
]}

机构：

[1] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow Oblast, Russia

[2] Forschungszentrum Julich, Peter Grunberg Inst PGI 9, D-52425 Julich, Germany

[3] Forschungszentrum Julich, JARA Fundamentals Future Informat Technol, D-52425 Julich, Germany

[4] Rhein Westfal TH Aachen, Inst Phys 2, D-52056 Aachen, Germany

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2013年 / 116卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

ELECTRON-TRANSPORT; FLOW;

D O I：

10.1134/S1063776112130195

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We performed measurements at helium temperatures of the electronic transport in the linear regime in an InAs quantum wire in the presence of a charged tip of an atomic force microscope (AFM) at low electron concentration. We show that at certain concentration of electrons, only two closely placed quantum dots, both in the Coulomb blockade regime, govern conductance of the whole wire. Under this condition, two types of peculiarities-wobbling and splitting-arise in the behavior of the lines of the conductance peaks of Coulomb blockade. These peculiarities are measured in quantum-wire-based structures for the first time. We explain both peculiarities as an interplay of the conductance of two quantum dots present in the wire. Detailed modeling of wobbling behavior made in the framework of the orthodox theory of Coulomb blockade demonstrates good agreement with the obtained experimental data.

引用

页码：138 / 144

页数：7

共 21 条

[1] Influence of growth temperature on the selective area MOVPE of InAs nanowires on GaAs (111) B using N2 carrier gas [J].

Akabori, M. ;

Sladek, K. ;

Hardtdegen, H. ;

Schaepers, Th. ;

Gruetzmacher, D. .

JOURNAL OF CRYSTAL GROWTH, 2009, 311 (15) :3813-3816

[2] Scanned probe imaging of quantum dots inside InAs nanowires [J].

Bleszynski, Ania C. ;

Zwanenburg, Floris A. ;

Westervelt, R. M. ;

Roest, Aarnoud L. ;

Bakkers, Erik P. A. M. ;

Kouwenhoven, Leo P. .

NANO LETTERS, 2007, 7 (09) :2559-2562

[3] Resonant electron scattering by defects in single-walled carbon nanotubes [J].

Bockrath, M ;

Liang, WJ ;

Bozovic, D ;

Hafner, JH ;

Lieber, CM ;

Tinkham, M ;

Park, HK .

SCIENCE, 2001, 291 (5502) :283-285

[4] Measurement of the tip-induced potential in scanning gate experiments [J].

Gildemeister, A. E. ;

Ihn, T. ;

Sigrist, M. ;

Ensslin, K. ;

Driscoll, D. C. ;

Gossard, A. C. .

PHYSICAL REVIEW B, 2007, 75 (19)

[5] Imaging and controlling electron transport inside a quantum ring [J].

Hackens, B. ;

Martins, F. ;

Ouisse, T. ;

Sellier, H. ;

Bollaert, S. ;

Wallart, X. ;

Cappy, A. ;

Chevrier, J. ;

Bayot, V. ;

Huant, S. .

NATURE PHYSICS, 2006, 2 (12) :826-830

[6] Spatial mapping and manipulation of two tunnel-coupled quantum dots [J].

Huefner, Magdalena ;

Kueng, Bruno ;

Schnez, Stephan ;

Ensslin, Klaus ;

Ihn, Thomas ;

Reinwald, Matthias ;

Wegscheider, Werner .

PHYSICAL REVIEW B, 2011, 83 (23)

[7] QUANTUM INTERFERENCE, TUNNEL-JUNCTIONS AND RESONANT-TUNNELING INTERFEROMETER [J].

NAZAROV, YV .

PHYSICA B-CONDENSED MATTER, 1993, 189 (1-4) :57-69

[8] Spatially resolved manipulation of single electrons in quantum dots using a scanned probe [J].

Pioda, A ;

Kicin, S ;

Ihn, T ;

Sigrist, M ;

Fuhrer, A ;

Ensslin, K ;

Weichselbaum, A ;

Ulloa, SE ;

Reinwald, M ;

Wegscheider, W .

PHYSICAL REVIEW LETTERS, 2004, 93 (21)

[9] STOCHASTIC COULOMB BLOCKADE IN A DOUBLE-DOT SYSTEM [J].

RUZIN, IM ;

CHANDRASEKHAR, V ;

LEVIN, EI ;

GLAZMAN, LI .

PHYSICAL REVIEW B, 1992, 45 (23) :13469-13478

[10] Imaging the lateral shift of a quantum point contact using scanning gate microscopy [J].

Schnez, S. ;

Roessler, C. ;

Ihn, T. ;

Ensslin, K. ;

Reichl, C. ;

Wegscheider, W. .

PHYSICAL REVIEW B, 2011, 84 (19)

← 1 2 3 →