Published July 15, 2011
| Published + Submitted
Journal Article
Open
Insulating phase of a two-dimensional electron gas in Mg_xZn_(1−x)O/ZnO heterostructures below ν = 1/3
Chicago
Abstract
We report magnetotransport properties of a two-dimensional electron gas confined at MgZnO/ZnO heterointerface in a high magnetic field up to 26 T. High electron mobility and low charge carrier density enabled the observation of the fractional quantum Hall state ν = 1/3. For an even lower charge carrier density, we observe a transition from quantum Hall liquid to an insulator below the filling factor 1/3. Because of the large electron effective mass in ZnO, we suggest the MgZnO/ZnO heterostructures to be a prototype system for highly correlated quantum Hall physics.
Additional Information
© 2011 American Physical Society. (Received 29 May 2011; published 25 July 2011) This work was partly supported by Grants-in-Aids for Scientific Research No. 22840004 (Y.K.), No. 21686002, and No. 22103004 (K.U.) from MEXT, Japan, and by the Japan Society for the Promotion of Science (JSPS) through its "Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST Program)" (A.T.) as well as by Asahi Glass Foundation (M.K.).Attached Files
Published - PhysRevB.84.033304.pdf
Submitted - 1106.5605.pdf
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Additional details
- Eprint ID
- 102321
- Resolver ID
- CaltechAUTHORS:20200403-115231264
- Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- 22840004
- Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- 21686002
- Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- 22103004
- Japan Society for the Promotion of Science (JSPS)
- Asahi Glass Foundation
- Created
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2020-04-06Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field