Magnetotransport study of the canted antiferromagnetic phase in bilayer ν=2 quantum Hall state

A. Fukuda, A. Sawada, S. Kozumi, D. Terasawa, Y. Shimoda, Z. F. Ezawa, N. Kumada, Y. Hirayama

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Magnetotransport properties are investigated in the bilayer quantum Hall state at the total filling factor ν=2. We measured the activation energy elaborately as a function of the total electron density and the density difference between the two layers. Our experimental data demonstrate clearly the emergence of the canted antiferromagnetic (CAF) phase between the ferromagnetic phase and the spin-singlet phase. The stability of the CAF phase is discussed by the comparison between experimental results and theoretical calculations using a Hartree-Fock approximation and an exact diagonalization study. The data reveal also an intrinsic structure of the CAF phase divided into two regions according to the dominancy between the intralayer and interlayer correlations.

Original languageEnglish
Article number165304
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume73
Issue number16
DOIs
Publication statusPublished - 2006
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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