2004/03/17 by D. Terasawa, M. Morino, Kazutaka Nakada +9
Materials Science · Physics and Astronomy · #Graphene research and applications #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1016/j.physe.2003.11.214
4 pages, 4 figures
openalex publication_date 2004/03/17 · arxiv created 2004/03/19 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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 \it et al.. We discuss a possible relation between our experimental results and the quantum Hall ferromagnet of spins and pseudospins.