Journal article

Competition between quantum-liquid and electron-solid phases in intermediate Landau levels

  • Goerbig, Mark O. Département de Physique, Université de Fribourg, Switzerland - Laboratoire de Physique des Solides, Bât. 510 (associé au CNRS), Université Paris-Sud, France
  • Lederer, P. Laboratoire de Physique des Solides, Bât. 510 (associé au CNRS), Université Paris-Sud, France
  • Morais Smith, Cristiane de Département de Physique, Université de Fribourg, Switzerland - Institute for Theoretical Physics, University of Utrecht, The Netherlands
    22.03.2004
Published in:
  • Physical Review B. - 2004, vol. 69, no. 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.
Faculty
Faculté des sciences
Department
Physique
Language
  • English
Classification
Physics
License
License undefined
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Persistent URL
https://folia.unifr.ch/unifr/documents/299862
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