title: 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 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 different nanaoscaled scatterers are discussed.
authors.affiliation: Department of Physics, National Taiwan University, Taipei 106, Taiwan. ctliang@phys.ntu.edu.tw.
authors.forename: Chi-Te
authors.initials: CT
authors.lastname: Liang
authors.forename: Li-Hung
authors.initials: LH
authors.lastname: Lin
authors.forename: Chen
authors.initials: C
authors.lastname: Kuang Yoa
authors.forename: Shun-Tsung
authors.initials: ST
authors.lastname: Lo
authors.forename: Yi-Ting
authors.initials: YT
authors.lastname: Wang
authors.forename: Dong-Sheng
authors.initials: DS
authors.lastname: Lou
authors.forename: Gil-Ho
authors.initials: GH
authors.lastname: Kim
authors.forename: Chang
authors.initials: C
authors.lastname: Yuan-Huei
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Ochiai
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Aoki
authors.forename: Jeng-Chung
authors.initials: JC
authors.lastname: Chen
authors.forename: Yiping
authors.initials: Y
authors.lastname: Lin
authors.forename: Huang
authors.initials: H
authors.lastname: Chun-Feng
authors.forename: Sheng-Di
authors.initials: SD
authors.lastname: Lin
authors.forename: David A
authors.initials: DA
authors.lastname: Ritchie