Semicircle: An exact relation in the integer and fractional quantum Hall effect
- Authors
- Hilke, M; Shahar, D; Song, SH; Tsui, DC; Xie, YH; Shayegan, M
- Issue Date
- Jun-1999
- Publisher
- E D P SCIENCES
- Citation
- EUROPHYSICS LETTERS, v.46, no.6, pp 775 - 779
- Pages
- 5
- Journal Title
- EUROPHYSICS LETTERS
- Volume
- 46
- Number
- 6
- Start Page
- 775
- End Page
- 779
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/29809
- DOI
- 10.1209/epl/i1999-00331-2
- ISSN
- 0295-5075
- Abstract
- We present experimental results on the quantized Hall insulator in two dimensions. This insulator, with vanishing conductivities, is characterized by the quantization (within experimental accuracy) of the Hall resistance in units of the quantum unit of resistance, h/e(2). The measurements were performed in a two-dimensional hole system, confined in a Ge/SiGe quantum well, when the magnetic field is increased above the v = 1; quantum Hall state. This quantization leads to a nearly perfect semicircle relation for the diagonal and Hall conductivities. Similar results are obtained with a higher-mobility n-type modulation-doped GaAs/AlGaAs sample, when the magnetic field is increased above the v = 1/3 fractional quantum Hall state.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of ICT Engineering > School of Electrical and Electronics Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.