Tunnelling between edge channels in the quantum Hall regime manipulated with a scanning force microscope

被引：2

作者：

Ihn, T ^{[1
]}

Rychen, J

Ensslin, K

Wegscheider, W

Bichler, M

机构：

[1] Swiss Fed Inst Technol, Solid State Phys Lab, CH-8093 Zurich, Switzerland

[2] Univ Regensburg, D-8400 Regensburg, Germany

[3] Tech Univ Munich, Walter Schottky Inst, Munich, Germany

来源：

MICROELECTRONIC ENGINEERING | 2002年 / 63卷 / 1-3期

关键词：

scanning probe techniques; quantum Hall effect; local spectroscopy;

D O I：

10.1016/S0167-9317(02)00599-3

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The tunnelling conductance between edge channels in the quantum Hall regime was measured. The tunnelling coupling is locally enhanced by a local repulsive potential induced by the conducting tip of a scanning force microscope. This allows mapping the enhanced tunnelling coupling along the sample edge and, in this sense, visualizes the presence of edge channels. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：81 / 85

页数：5

共 16 条

[1] ABSENCE OF BACKSCATTERING IN THE QUANTUM HALL-EFFECT IN MULTIPROBE CONDUCTORS [J].

BUTTIKER, M .

PHYSICAL REVIEW B, 1988, 38 (14) :9375-9389

[2] ELECTROSTATICS OF EDGE CHANNELS [J].

CHKLOVSKII, DB ;

SHKLOVSKII, BI ;

GLAZMAN, LI .

PHYSICAL REVIEW B, 1992, 46 (07) :4026-4034

[3] Imaging of low-compressibility strips in the quantum Hall liquid [J].

Finkelstein, G ;

Glicofridis, PI ;

Tessmer, SH ;

Ashoori, RC ;

Melloch, MR .

PHYSICAL REVIEW B, 2000, 61 (24) :R16323-R16326

[4] QUANTIZED HALL CONDUCTANCE, CURRENT-CARRYING EDGE STATES, AND THE EXISTENCE OF EXTENDED STATES IN A TWO-DIMENSIONAL DISORDERED POTENTIAL [J].

HALPERIN, BI .

PHYSICAL REVIEW B, 1982, 25 (04) :2185-2190

[5]

KENT AJ, 1992, HELV PHYS ACTA, V65, P331

[6] ELECTROOPTIC IMAGING OF POTENTIAL DISTRIBUTIONS IN THE QUANTUM HALL REGIME [J].

KNOTT, R ;

DIETSCHE, W ;

VONKLITZING, K ;

EBERL, K ;

PLOOG, K .

SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 1995, 10 (02) :117-126

[7] Scanned potential microscopy of edge and bulk currents in the quantum Hall regime [J].

McCormick, KL ;

Woodside, MT ;

Huang, M ;

Wu, MS ;

McEuen, PL ;

Duruoz, C ;

Harris, JS .

PHYSICAL REVIEW B, 1999, 59 (07) :4654-4657

[8] NEW RESISTIVITY FOR HIGH-MOBILITY QUANTUM HALL CONDUCTORS [J].

MCEUEN, PL ;

SZAFER, A ;

RICHTER, CA ;

ALPHENAAR, BW ;

JAIN, JK ;

STONE, AD ;

WHEELER, RG ;

SACKS, RN .

PHYSICAL REVIEW LETTERS, 1990, 64 (17) :2062-2065

[9] A low-temperature dynamic mode scanning force microscope operating in high magnetic fields [J].

Rychen, J ;

Ihn, T ;

Studerus, P ;

Herrmann, A ;

Ensslin, K .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1999, 70 (06) :2765-2768

[10] Operation characteristics of piezoelectric quartz tuning forks in high magnetic fields at liquid helium temperatures [J].

Rychen, J ;

Ihn, T ;

Studerus, P ;

Herrmann, A ;

Ensslin, K ;

Hug, HJ ;

van Schendel, PJA ;

Güntherodt, HJ .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2000, 71 (04) :1695-1697

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