Effect of Zeeman energy on heat capacity of GaAs/AlGaAs heterostructures near ν = 1

S. Melinte, E. Grivei, J. M. Beuken, G. Mariage, L. Malcorps, C. Gustin, V. Bayot, M. Shayegan

Research output: Contribution to journalConference article

Abstract

By controlling the ratio η between the Zeeman and Coulomb energies, the heat capacity of a multilayer two-dimensional electron system (2DES) is measured near Landau level filling ν = 1 at 60 mK. The data reveal the disappearance of the nuclear spin contribution of GaAs quantum wells to the heat capacity as η exceeds a critical value ηC≈0.04. This result is interpreted as the effect of the transition from Skyrmions to single electron spin flips at large Zeeman energy.

Original languageEnglish (US)
Pages (from-to)52-55
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume6
Issue number1
DOIs
StatePublished - Feb 2000
Event13th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS-13) - Ottawa, Ont, Can
Duration: Aug 1 1999Aug 6 1999

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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