Doubly enhanced Skyrmions in v = 2 bilayer quantum Hall states

Norio Kumada, Anju Sawada, Zyun F. Ezawa, Satoshi Nagahama, Hirofumi Azuhata, Koji Muraki, Tadashi Saku, Yoshiro Hirayama

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Skyrmion excitations were measured and compared for the first time in the bilayer quantum Hall (QH) state at the Landau-level filling factor v = 2 and in the monolayer QH state at v = 1. The observed number of flipped spins, Nspin, is 14 in the bilayer sample with a large tunnelling gap, and Nspin = 7 in the bilayer sample with a small tunnelling gap, while it is Nspin = 7 in the monolayer sample. The difference is interpreted to be due to the iriterlayer exchange interaction.

Original languageEnglish
Pages (from-to)3178-3181
Number of pages4
Journaljournal of the physical society of japan
Issue number10
Publication statusPublished - 2000 Oct
Externally publishedYes


  • Exchange interactions
  • Magnetotransport
  • Quantum Hall effect
  • Semiconductor
  • Skyrmion

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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