Phase diagrams of v=2 and v=2/3 quantum Hall states in bilayer systems

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

研究成果: Article査読

20 被引用数 (Scopus)

抄録

We compare quantum Hall (QH) states at the Landau-level filling factor v=2 and its composite-fermion (CF) counterpart, v=2/3, in bilayer systems with various tunneling gaps. By changing the total electron density and the density difference between the two layers, we have made phase diagrams for v=2 and v =2/3. A one-particle picture provides a qualitative account of the phase diagrams, By quantitative analyses, we conclude that CF interactions exert strong influences on the fractional QH states as electron interactions do on the integer QH states. In addition, we investigate the temperature dependence of hysteresis observed at v =2/3 and find that a metastable domain structure only occurs when the magnetic field is swept upward.

本文言語English
論文番号155319
ページ(範囲)155319-1-155319-9
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
69
15
DOI
出版ステータスPublished - 2004 4
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

フィンガープリント

「Phase diagrams of v=2 and v=2/3 quantum Hall states in bilayer systems」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル