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
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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
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 5268
- DOI 10.1103/PhysRevB.69.115327
- Persistent URL
- https://folia.unifr.ch/unifr/documents/299862
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