Imaging of quantum interference patterns within a quantum point contact

被引：23
作者：
da Cunha, Carlo R. [1 ]
Aoki, Nobuyuki
Morimoto, Takahiro
Ochiai, Yuichi
Akis, Richard
Ferry, David K.
机构：
[1] Univ Fed Rio Grande do Sul, Dept Elect Engn, BR-90035190 Rio De Janeiro, Brazil
[2] Chiba Univ, Dept Elect & Mech Engn, Inage Ku, Chiba 2638522, Japan
[3] Arizona State Univ, Dept Elect Engn, Tempe, AZ 85287 USA
[4] Arizona State Univ, Ctr Solid State Elect Res, Tempe, AZ 85287 USA
来源：
APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 24期
关键词：
D O I：
10.1063/1.2405843
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Visualization of quantum interference patterns has been obtained within a quantum point contact using scanning gate microscopy. The area distribution of the interference pattern is shown to be consistent with the interference area obtained from the magnetoconductance fluctuations of a quantum point contact. Both distributions follow the Gaussian unitary ensemble, corresponding to chaotic behavior. The interference is caused by the random potential fluctuations within the channel, which is modified by the tip-induced potential. (c) 2006 American Institute of Physics.
引用
收藏
页数：3
相关论文
共 21 条
[1]   Study of quantum point contact via low temperature scanning gate microscopy [J].
Aoki, N. ;
Burke, A. ;
Da Cunha, C. R. ;
Akis, R. ;
Ferry, D. K. ;
Ochiai, Y. .
SEVENTH INTERNATIONAL CONFERENCE ON NEW PHENOMENA IN MESOSCOPIC STRUCTURES AND FIFTH INTERNATIONAL CONFERENCE ON SURFACES AND INTERFACES OF MESOSCOPIC DEVICES, 2005, 2006, 38 :79-82
[2]   Imaging of integer quantum Hall edge state in a quantum point contact via scanning gate microscopy [J].
Aoki, N ;
da Cunha, CR ;
Akis, R ;
Ferry, DK ;
Ochiai, Y .
PHYSICAL REVIEW B, 2005, 72 (15)
[3]   Scanning gate microscopy investigations on an InGaAs quantum point contact [J].
Aoki, N ;
Da Cunha, CR ;
Akis, R ;
Ferry, DK ;
Ochiai, Y .
APPLIED PHYSICS LETTERS, 2005, 87 (22) :1-3
[4]  
AOKI N, 2006, I PHYS C SER, V187, P473
[5]   Vertical-mode dependence of coupling between an electron waveguide and reservoirs with two occupied subbands [J].
Apetrii, G ;
Fischer, SF ;
Ulrich, KA ;
Schuh, D ;
Abstreiter, G .
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2004, 22 (1-3) :398-401
[6]   Scanned probe microscopy of electronic transport in carbon nanotubes [J].
Bachtold, A ;
Fuhrer, MS ;
Plyasunov, S ;
Forero, M ;
Anderson, EH ;
Zettl, A ;
McEuen, PL .
PHYSICAL REVIEW LETTERS, 2000, 84 (26) :6082-6085
[7]   Imaging fractal conductance fluctuations and scarred wave functions in a quantum billiard [J].
Crook, R ;
Smith, CG ;
Graham, AC ;
Farrer, I ;
Beere, HE ;
Ritchie, DA .
PHYSICAL REVIEW LETTERS, 2003, 91 (24)
[8]   One-dimensional probability density observed using scanned gate microscopy [J].
Crook, R ;
Smith, CG ;
Simmons, MY ;
Ritchie, DA .
JOURNAL OF PHYSICS-CONDENSED MATTER, 2000, 12 (50) :L735-L740
[9]  
Guhr T, 1998, PHYS REP, V299, P190
[10]   Quantum chaos in nanoelectromechanical systems [J].
Gusso, A ;
da Luz, MGE ;
Rego, LGC .
PHYSICAL REVIEW B, 2006, 73 (03)
123