Microwave resonances in low-filling insulating phase of two-dimensional electron system

L. W. Engel; C. C. Li; D. Shahar; D. C. Tsui; M. Shayegan

doi:10.1016/S0038-1098(97)00302-5

Microwave resonances in low-filling insulating phase of two-dimensional electron system

L. W. Engel, C. C. Li, D. Shahar, D. C. Tsui, M. Shayegan

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42 Scopus citations

Abstract

We present data on finite frequency (0.2 ≤ f ≤ 8.6 GHz) conductivity, Re(σ_xx), of the insulator terminating a fractional quantum Hall effect series in the high magnetic field (B) limit. As B is increased within the insulator, at temperatures of 50 and 200 mK Re(σ_xx) vs f evolves from a decreasing curve into a peak. The height and f of the peak increase with B. Integrals of Re(σ_xx) vs f become B-independent at large enough B. The results are discussed within the framework of the Fukuyama-Lee model of the dynamics of a pinned Wigner crystal.

Original language	English (US)
Pages (from-to)	167-171
Number of pages	5
Journal	Solid State Communications
Volume	104
Issue number	3
DOIs	https://doi.org/10.1016/S0038-1098(97)00302-5
State	Published - Oct 1997

All Science Journal Classification (ASJC) codes

General Chemistry
Condensed Matter Physics
Materials Chemistry

Keywords

A. Heterojunctions
D. Fractional quantum Hall effect
D. Quantum localization

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10.1016/S0038-1098(97)00302-5

Cite this

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title = "Microwave resonances in low-filling insulating phase of two-dimensional electron system",

abstract = "We present data on finite frequency (0.2 ≤ f ≤ 8.6 GHz) conductivity, Re(σxx), of the insulator terminating a fractional quantum Hall effect series in the high magnetic field (B) limit. As B is increased within the insulator, at temperatures of 50 and 200 mK Re(σxx) vs f evolves from a decreasing curve into a peak. The height and f of the peak increase with B. Integrals of Re(σxx) vs f become B-independent at large enough B. The results are discussed within the framework of the Fukuyama-Lee model of the dynamics of a pinned Wigner crystal.",

keywords = "A. Heterojunctions, D. Fractional quantum Hall effect, D. Quantum localization",

author = "Engel, {L. W.} and Li, {C. C.} and D. Shahar and Tsui, {D. C.} and M. Shayegan",

note = "Funding Information: Acknowledgements-We acknowledges upport from NSF. LWE acknowledgess upport from the stateo f Florida.",

year = "1997",

month = oct,

doi = "10.1016/S0038-1098(97)00302-5",

language = "English (US)",

volume = "104",

pages = "167--171",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Microwave resonances in low-filling insulating phase of two-dimensional electron system

AU - Engel, L. W.

AU - Li, C. C.

AU - Shahar, D.

AU - Tsui, D. C.

AU - Shayegan, M.

N1 - Funding Information: Acknowledgements-We acknowledges upport from NSF. LWE acknowledgess upport from the stateo f Florida.

PY - 1997/10

Y1 - 1997/10

N2 - We present data on finite frequency (0.2 ≤ f ≤ 8.6 GHz) conductivity, Re(σxx), of the insulator terminating a fractional quantum Hall effect series in the high magnetic field (B) limit. As B is increased within the insulator, at temperatures of 50 and 200 mK Re(σxx) vs f evolves from a decreasing curve into a peak. The height and f of the peak increase with B. Integrals of Re(σxx) vs f become B-independent at large enough B. The results are discussed within the framework of the Fukuyama-Lee model of the dynamics of a pinned Wigner crystal.

AB - We present data on finite frequency (0.2 ≤ f ≤ 8.6 GHz) conductivity, Re(σxx), of the insulator terminating a fractional quantum Hall effect series in the high magnetic field (B) limit. As B is increased within the insulator, at temperatures of 50 and 200 mK Re(σxx) vs f evolves from a decreasing curve into a peak. The height and f of the peak increase with B. Integrals of Re(σxx) vs f become B-independent at large enough B. The results are discussed within the framework of the Fukuyama-Lee model of the dynamics of a pinned Wigner crystal.

KW - A. Heterojunctions

KW - D. Fractional quantum Hall effect

KW - D. Quantum localization

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U2 - 10.1016/S0038-1098(97)00302-5

DO - 10.1016/S0038-1098(97)00302-5

M3 - Article

AN - SCOPUS:0031259431

SN - 0038-1098

VL - 104

SP - 167

EP - 171

JO - Solid State Communications

JF - Solid State Communications

IS - 3

ER -

Microwave resonances in low-filling insulating phase of two-dimensional electron system

Abstract

All Science Journal Classification (ASJC) codes

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