Resistance fluctuations in the quantum Hall regime

P. C. Main; A. K. Geim; H. A. Carmona; C. V. Brown; T. J. Foster; R. Taboryski; P. E. Lindelof

doi:10.1103/PhysRevB.50.4450

Resistance fluctuations in the quantum Hall regime

P. C. Main, A. K. Geim, H. A. Carmona, C. V. Brown, T. J. Foster, R. Taboryski, P. E. Lindelof

Research output: Contribution to journal › Article › peer-review

Abstract

We have measured the low-temperature magnetoresistance of long (>50 μm), narrow (∼1 μm) quantum wires fabricated from a high-mobility two-dimensional electron gas. In the quantum Hall regime at high magnetic fields we observe that the Shubnikov-de Haas oscillations split into a series of aperiodic sharp peaks. Both the amplitude and sharpness of the peaks are strongly dependent on temperature below 1 K. We attribute the peaks to resonant tunneling between edge states through localized states in the bulk. The results are in quantitative agreement with the theoretical model of Jain and Kivelson. © 1994 The American Physical Society.

Original language	English
Pages (from-to)	4450-4455
Number of pages	5
Journal	Physical Review B: covering condensed matter and materials physics
Volume	50
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevB.50.4450
Publication status	Published - 1994

Keywords

high magnetic-fields
universal conductance fluctuations
edge states
suppression
breakdown
phase

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10.1103/PhysRevB.50.4450

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title = "Resistance fluctuations in the quantum Hall regime",

abstract = "We have measured the low-temperature magnetoresistance of long (>50 μm), narrow (∼1 μm) quantum wires fabricated from a high-mobility two-dimensional electron gas. In the quantum Hall regime at high magnetic fields we observe that the Shubnikov-de Haas oscillations split into a series of aperiodic sharp peaks. Both the amplitude and sharpness of the peaks are strongly dependent on temperature below 1 K. We attribute the peaks to resonant tunneling between edge states through localized states in the bulk. The results are in quantitative agreement with the theoretical model of Jain and Kivelson. {\textcopyright} 1994 The American Physical Society.",

keywords = "high magnetic-fields, universal conductance fluctuations, edge states, suppression, breakdown, phase",

author = "Main, {P. C.} and Geim, {A. K.} and Carmona, {H. A.} and Brown, {C. V.} and Foster, {T. J.} and R. Taboryski and Lindelof, {P. E.}",

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doi = "10.1103/PhysRevB.50.4450",

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TY - JOUR

T1 - Resistance fluctuations in the quantum Hall regime

AU - Main, P. C.

AU - Geim, A. K.

AU - Carmona, H. A.

AU - Brown, C. V.

AU - Foster, T. J.

AU - Taboryski, R.

AU - Lindelof, P. E.

N1 - Pd753 Times Cited:20 Cited References Count:26

PY - 1994

Y1 - 1994

N2 - We have measured the low-temperature magnetoresistance of long (>50 μm), narrow (∼1 μm) quantum wires fabricated from a high-mobility two-dimensional electron gas. In the quantum Hall regime at high magnetic fields we observe that the Shubnikov-de Haas oscillations split into a series of aperiodic sharp peaks. Both the amplitude and sharpness of the peaks are strongly dependent on temperature below 1 K. We attribute the peaks to resonant tunneling between edge states through localized states in the bulk. The results are in quantitative agreement with the theoretical model of Jain and Kivelson. © 1994 The American Physical Society.

AB - We have measured the low-temperature magnetoresistance of long (>50 μm), narrow (∼1 μm) quantum wires fabricated from a high-mobility two-dimensional electron gas. In the quantum Hall regime at high magnetic fields we observe that the Shubnikov-de Haas oscillations split into a series of aperiodic sharp peaks. Both the amplitude and sharpness of the peaks are strongly dependent on temperature below 1 K. We attribute the peaks to resonant tunneling between edge states through localized states in the bulk. The results are in quantitative agreement with the theoretical model of Jain and Kivelson. © 1994 The American Physical Society.

KW - high magnetic-fields

KW - universal conductance fluctuations

KW - edge states

KW - suppression

KW - breakdown

KW - phase

U2 - 10.1103/PhysRevB.50.4450

DO - 10.1103/PhysRevB.50.4450

M3 - Article

SN - 0163-1829

VL - 50

SP - 4450

EP - 4455

JO - Physical Review B: covering condensed matter and materials physics

JF - Physical Review B: covering condensed matter and materials physics

IS - 7

ER -

Resistance fluctuations in the quantum Hall regime

Abstract

Keywords

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