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On the direct insulator-quantum Hall transition in two-dimensional electron systems in the vicinity of nanoscaled scatterers.


ABSTRACT: A direct insulator-quantum Hall (I-QH) transition corresponds to a crossover/transition from the insulating regime to a high Landau level filling factor ? > 2 QH state. Such a transition has been attracting a great deal of both experimental and theoretical interests. In this study, we present three different two-dimensional electron systems (2DESs) which are in the vicinity of nanoscaled scatterers. All these three devices exhibit a direct I-QH transition, and the transport properties under different nanaoscaled scatterers are discussed.

SUBMITTER: Liang CT 

PROVIDER: S-EPMC3211178 | biostudies-literature | 2011 Feb

REPOSITORIES: biostudies-literature

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On the direct insulator-quantum Hall transition in two-dimensional electron systems in the vicinity of nanoscaled scatterers.

Liang Chi-Te CT   Lin Li-Hung LH   Kuang Yoa Chen C   Lo Shun-Tsung ST   Wang Yi-Ting YT   Lou Dong-Sheng DS   Kim Gil-Ho GH   Yuan-Huei Chang C   Ochiai Yuichi Y   Aoki Nobuyuki N   Chen Jeng-Chung JC   Lin Yiping Y   Chun-Feng Huang H   Lin Sheng-Di SD   Ritchie David A DA  

Nanoscale research letters 20110211 1


A direct insulator-quantum Hall (I-QH) transition corresponds to a crossover/transition from the insulating regime to a high Landau level filling factor ν > 2 QH state. Such a transition has been attracting a great deal of both experimental and theoretical interests. In this study, we present three different two-dimensional electron systems (2DESs) which are in the vicinity of nanoscaled scatterers. All these three devices exhibit a direct I-QH transition, and the transport properties under diff  ...[more]

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