Competition between quantum-liquid and electron-solid phases in intermediate Landau levels
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Goerbig, Mark O.
Département de Physique, Université de Fribourg, Switzerland - Laboratoire de Physique des Solides, Bât. 510 (associé au CNRS), Université Paris-Sud, France
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Lederer, P.
Laboratoire de Physique des Solides, Bât. 510 (associé au CNRS), Université Paris-Sud, France
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Morais Smith, Cristiane de
Département de Physique, Université de Fribourg, Switzerland - Institute for Theoretical Physics, University of Utrecht, The Netherlands
Published in:
- Physical Review B. - 2004, vol. 69, no. 11, p. 115327
English
On the basis of energy calculations we investigate the competition between quantum-liquid and electron-solid phases in the Landau levels n = 1, 2, and 3 as a function of their partial filling factor ̅ν̅. Whereas the quantum-liquid phases are stable only in the vicinity of quantized values of ν̅= 1/(2s + 1), an electron solid in the form of a triangular lattice of clusters with a few number of electrons (bubble phase) is energetically favorable between these fillings. This alternation of electron-solid phases, which are insulating because they are pinned by the residual impurities in the sample, and quantum liquids displaying the fractional quantum Hall effect explains a recently observed reentrance of the integral quantum Hall effect in the Landau levels n = 1 and 2. Around half-filling of the last Landau level, a unidirectional charge density wave (stripe phase) has a lower energy than the bubble phase.
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Faculty
- Faculté des sciences et de médecine
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Department
- Département de Physique
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Language
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Classification
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Physics
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License
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License undefined
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Identifiers
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Persistent URL
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https://folia.unifr.ch/unifr/documents/299862
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