Edge-State Velocity and Coherence in a Quantum Hall Fabry-Peacuterot Interferometer

被引：86

作者：

McClure, D. T. ^{[1
]}

Zhang, Yiming ^{[1
]}

Rosenow, B. ^{[1
,2
]}

Levenson-Falk, E. M. ^{[1
]}

Marcus, C. M. ^{[1
]}

Pfeiffer, L. N. ^{[3
]}

West, K. W. ^{[3
]}

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[2] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

[3] Alcatel Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 20期

关键词：

TUNNEL-JUNCTIONS;

D O I：

10.1103/PhysRevLett.103.206806

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate nonlinear transport in electronic Fabry-Peacuterot interferometers in the integer quantum Hall regime. For interferometers sufficiently large that Coulomb blockade effects are absent, a checkerboardlike pattern of conductance oscillations as a function of dc bias and perpendicular magnetic field is observed. Edge-state velocities extracted from the checkerboard data are compared to model calculations and found to be consistent with a crossover from skipping orbits at low fields to ExB drift at high fields. Suppression of visibility as a function of bias and magnetic field is accounted for by including energy- and field-dependent dephasing of edge electrons.

引用

页数：4