2013 Fiscal Year Final Research Report
Exploration for quantum transport properties of strongly correlated two-dimensional electron gas in ZnO related heterostructures
| Project/Area Number |
23686008
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (A)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Thin film/Surface and interfacial physical properties
|
|---|
| Research Institution | Tohoku University (2013)
The University of Tokyo (2011-2012) |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2011-04-01 – 2014-03-31
|
| Keywords | 界面 / 量子輸送現象 |
|---|
| Research Abstract |
In this research, electron-electron interaction in two-dimensional electron gas in MgZnO/ZnO heterostructures was investigated with applying field-effect gating technique. The heterostructures were grown by molecular-beam epitaxy, whose mobility is now reaching to 800,000cm2V-1s-1. With using cyclotron resonance method, we conclude that the enhancement of the effective mass and g-factor of 2D electrons originates from electron-electron interaction. In addition, a new gating technique with air-gapped structure was applied to MgZnO/ZnO samples, enabling us to reduce 2DEG density with keeping high electron mobility.
|
Research Products
(22 results)
-
-
-
-
-
[Journal Article] Magneto-photoluminescence of charged excitons from Mg_xZn_<1-x>O/ZnO heterojunctons2013
Author(s)
T. Makino, Y. Segawa, A. Tsukazaki, R. Shen, S. Takeyama, H. Yuji, Y. Nishimoto, S. Akasaka, D. Takamizu, K. Nakahara, T. Tanabe, A. Kamisawa, M. Kawasaki
-
Journal Title
Physical Review B
Volume: 87, 085312
Pages: 1-7
Peer Reviewed
-
-
-
-
[Journal Article] Insulating phase of a two-dimensional electron gas in Mg_xZn_<1-x>O/ZnO heterostructures below v=1/32011
Author(s)
Y. Kozuka, A. Tsukazaki, D. Maryenko, J. Falson, S. Akasaka, K. Nakahara, S. Nakamura, S. Awaji, K. Ueno, M. Kawasaki
-
Journal Title
Physical Review B
Volume: 84, 033304
Pages: 1-4
Peer Reviewed
-
-
-
-
-
-
-
-
-
-
-
-
-
