Spin-dependent phase diagram of the νt=1 bilayer electron system

P. Giudici, K. Muraki, N. Kumada, Y. Hirayama, T. Fujisawa

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34 Citations (Scopus)

Abstract

We show that the spin degree of freedom plays a decisive role in the phase diagram of the νT=1 bilayer electron system using an in-plane field B∥ in the regime of negligible tunneling. We observe that the phase boundary separating the quantum Hall and compressible states at d/ℓ B=1.90 for B∥=0 (d: interlayer distance, ℓB: magnetic length) steadily shifts with B∥ before saturating at d/ℓB=2.33 when the compressible state becomes fully polarized. Using a simple model for the energies of the competing phases, we can quantitatively describe our results. A new phase diagram as a function of d/ℓB and the Zeeman energy is established and its implications as to the nature of the phase transition are discussed.

Original languageEnglish
Article number106803
JournalPhysical Review Letters
Volume100
Issue number10
DOIs
Publication statusPublished - 2008 Mar 12

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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