Publications (2)0 Total impact
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Article: Insulating phase of a two-dimensional electron gas in Mg_ {x} Zn_ {1− x} O/ZnO heterostructures below ν= 1/3
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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.Phys. Rev. B. 07/2011; 84(3). -
Article: Insulating phase of a two-dimensional electron gas in MgZnO/ZnO heterostructure below nu = 1/3
[show abstract] [hide abstract]
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 nu = 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 heterostructure to be a prototype system for highly correlated quantum Hall physics.06/2011;
Institutions
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2011
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Tohoku University
- Institute for Materials Research
Sendai, Kagoshima-ken, Japan
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