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Quantum hall transition in real space : from localized to extended states
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Hashimoto, Katsushi, Sohrmann, C., Wiebe, Jens, Inaoka, T., Meier, F., Hirayama, Yoshiro, Roemer, Rudolf A., Wiesendanger, R. and Morgenstern, M. (2008) Quantum hall transition in real space : from localized to extended states. Physical Review Letters, Vol.101 (No.25). article no. 256802 . doi:10.1103/PhysRevLett.101.256802 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.101.256802
Abstract
Using scanning tunneling spectroscopy in an ultrahigh vacuum at low temperature (T=0.3 K) and high magnetic fields (B <= 12 T), we directly probe electronic wave functions across an integer quantum Hall transition. In accordance with theoretical predictions, we observe the evolution from localized drift states in the insulating phases to branched extended drift states at the quantum critical point. The observed microscopic behavior close to the extended state indicates points of localized quantum tunneling, which are considered to be decisive for a quantitative description of the transition.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics Faculty of Science, Engineering and Medicine > Science > Centre for Scientific Computing |
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Library of Congress Subject Headings (LCSH): | Quantum Hall effect, Phase transformations (Statistical physics) | ||||
Journal or Publication Title: | Physical Review Letters | ||||
Publisher: | American Physical Society | ||||
ISSN: | 0031-9007 | ||||
Official Date: | 19 December 2008 | ||||
Dates: |
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Volume: | Vol.101 | ||||
Number: | No.25 | ||||
Number of Pages: | 4 | ||||
Page Range: | article no. 256802 | ||||
DOI: | 10.1103/PhysRevLett.101.256802 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Funder: | Deutsche Forschungsgemeinschaft (DFG) | ||||
Grant number: | SFB 508-B4 (DFG) |
Data sourced from Thomson Reuters' Web of Knowledge
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