Evidence of a first-order phase transition between wigner-crystal and bubble phases of 2D electrons in higher landau levels

For filling factors nu in the range between 4.16 and 4.28, we simultaneously detect two resonances in the real diagonal microwave conductivity of a two-dimensional electron system (2DES) at low temperature T approximately 35 mK. We attribute the resonance to Wigner-crystal and Bubble phases of the 2...

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Published in:Physical review letters 2004-10, Vol.93 (17), p.176808.1-176808.4, Article 176808
Main Authors: LEWIS, R. M, YONG CHEN, ENGEL, L. W, TSUI, D. C, YE, P. D, PFEIFFER, L. N, WEST, K. W
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Language:English
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Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron solids
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Exact sciences and technology
Physics
Surface and interface electron states
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cited_by cdi_FETCH-LOGICAL-c403t-7efa31f00d47e6fc38c5d2c69cb6a058caaabf012d8a0f63941143c809bb6a503
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container_end_page 176808.4
container_issue 17
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container_title Physical review letters
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creator LEWIS, R. M
YONG CHEN
ENGEL, L. W
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PFEIFFER, L. N
WEST, K. W
description For filling factors nu in the range between 4.16 and 4.28, we simultaneously detect two resonances in the real diagonal microwave conductivity of a two-dimensional electron system (2DES) at low temperature T approximately 35 mK. We attribute the resonance to Wigner-crystal and Bubble phases of the 2DES in higher Landau Levels. For nu below and above this range, only single resonances are observed. The coexistence of both phases is taken as evidence of a first-order phase transition. We estimate the transition point as nu=4.22.
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subjects Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron solids
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Exact sciences and technology
Physics
Surface and interface electron states
title Evidence of a first-order phase transition between wigner-crystal and bubble phases of 2D electrons in higher landau levels
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