Simultaneous excitation of spins and pseudospins in the bilayer ν = 1 quantum Hall state

D. Terasawa, M. Morino, K. Nakada, S. Kozumi, A. Sawada, Z. F. Ezawa, N. Kumada, K. Muraki, T. Saku, Y. Hirayama

研究成果: Conference article査読

26 被引用数 (Scopus)

抄録

The tilting angular dependence of the energy gap was measured in the bilayer quantum Hall state at the Landau level filling ν=1 by changing the density imbalance between the two layers. The observed gap behavior shows a continuous transformation from the bilayer balanced density state to the monolayer state. Even a sample with 33 K tunneling gap shows the same activation energy anomaly reported by Murphy et al. (Phys. Rev. Lett. 72 (1994) 728). We discuss a possible relation between our experimental results and the quantum Hall ferromagnet of spins and pseudospins.

本文言語English
ページ(範囲)52-55
ページ数4
ジャーナルPhysica E: Low-Dimensional Systems and Nanostructures
22
1-3
DOI
出版ステータスPublished - 2004 4月
外部発表はい
イベント15th International Conference on ELectronic Propreties - Nara, Japan
継続期間: 2003 7月 142003 7月 18

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 原子分子物理学および光学
  • 凝縮系物理学

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