Localization Exponent for the Second Landau Level in the Quantum Hall Effect

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2008,（3）
• 页码范围: 1083-1086
• 页数: 4页
• 语种: 英文

摘要

At temperature above 1 K,we measured the temperature dependence of the longitudinal and Hall resistivity ρxx,ρxy in the regime of the quantum Hall plateau-to-platean transitions.The localization exponent v is extracted with an approach based on the variable range hopping theory.We find the quantity v≈2.3 at the second Landau level,which is proven to be accurately universal.