Real-space mapping of a disordered two-dimensional electron system in the quantum Hall regime

K. Hashimoto, J. Wiebe, T. Inaoka, Y. Hirayama, R. Wiesendanger, M. Morgenstern

研究成果: Conference article査読

1 被引用数 (Scopus)

抄録

By using scanning tunnelling spectroscopy, we study the influence of potential disorder on an adsorbate-induced two-dimensional electron system in the integer quantum Hall regime. The real-space imaged local density of states exhibits transition from localized drift states encircling the potential minima to another type of localized drift states encircling the potential maxima. While the former states show regular round shapes, the latter have irregular-shaped patterns. This difference is induced by different sources for the potential minima and maxima, i.e., substrate donors and an inhomogeneous distribution of the adsorbates, respectively.

本文言語English
論文番号012008
ジャーナルJournal of Physics: Conference Series
334
1
DOI
出版ステータスPublished - 2011
イベント19th International Conference on the Application of High Magnetic Fields in Semiconductor Physics and Nanotechnology, HMF-19 - Fukuoka, Japan
継続期間: 2010 8月 12010 8月 6

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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