Stability of soliton lattice phase in the ν = 1 bilayer quantum Hall state under tilted magnetic fields

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

Research output: Contribution to journalArticlepeer-review

Abstract

The bilayer quantum Hall (QH) state at the filling factor ν = 1 shows various fascinating quantum phenomena due to the layer degree of freedom called 'pseudospin'. We report an experimental evidence of the soliton lattice (SL) phase, which is a domain structure of pseudospin, by the appearance of a local maximum of magnetoresistance near the ν = 1 QH state. We investigate the stability of the SL phase by changing B and the total electron density nT. Detailed magnetotransport measurements under tilted magnetic fields were carried out to obtain a B-nT plane phase diagram containing the C, IC and SL phases. We found the SL phase is only stable at low nT region. Namely, the C-SL-IC phase transition occurs only at low nT region as B increases. On the contrary, the C-IC phase transition directly occurs without passing through the SL phase at high nT region.

Original languageEnglish
Pages (from-to)81-84
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume34
Issue number1-2
DOIs
Publication statusPublished - 2006 Aug
Externally publishedYes

Keywords

  • Domain wall
  • Phase transition
  • Quantum Hall effect
  • Soliton lattice

ASJC Scopus subject areas

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

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