2010 Fiscal Year Final Research Report
Verification of macroscopic quantum coherence in the bilayer quantum Hall states
| Project/Area Number |
21740236
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics I
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| Research Institution | Hyogo College of Medicine |
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Principal Investigator |
FUKUDA Akira Hyogo College of Medicine, 医学部, 准教授 (70360633)
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| Project Period (FY) |
2009 – 2010
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| Keywords | 半導体 |
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| Research Abstract |
We carried out quantum magnetotransport measurements in the bilayer integer quantum Hall states (QHSs) and the bilayer fractional QHSs, mainly including the activation energy. In particular, we clarified the similarities and differences between the bilayer ν=1 integer QHSs and the bilayer ν=1/3 fractional QHSs, where the ν=1/3 QHS is the composite fermion version of the ν=1 QHS, and in both QHSs, they indicate the existence of the macroscopic quantum coherence. We have continued the observation of the quantum transports under the microwave irradiation and may have promising results.
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[Journal Article] Activation Study of the Pseudospin Soliton in the ν=1 Bilayer Quantum Hall Effect2009
Author(s)
A.Fukuda, D.Terasawa, M.Morino, K.Iwata, S.Kozumi, T.Sekikawa, Y.Ogasawara, T.Arai, N.Kumada, Y.Hirayama, Z.F.Ezawa, A.Sawada
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Journal Title
J.Phys.: Conference Series 150
Pages: 0220121-0220124
Peer Reviewed
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[Presentation] Activation study of the ν =1/3 bilayer quantum Hall states in the vicinity of single layer limit2010
Author(s)
A.Fukuda, T.Sekikawa, K.Iwata, Y.Ogasawara, Y.D.Zheng, T.Morikawa, S.Tsuda, T.Arai, Z.F.Ezawa, A.Sawada
Organizer
19th International Conference on the Application of High Magnetic Fields in Semiconductor Physics and Nanotechnology (HMF-19)
Place of Presentation
Fukuoka International Congress Center, Fukuoka
Year and Date
2010-08-02
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[Presentation] Effects of the in-plane magnetic fields on excitations of theν= 1/3 bilayer quantum Hall states in the vicinity of single layer limit2010
Author(s)
A.Fukuda, T.Sekikawa, K.Iwata, Y.Ogasawara, Y.D.Zheng, T.Morikawa, S.Tsuda, T.Arai, Z.F.Ezawa, A.Sawada
Organizer
30th International Conference on the Physics of Semiconductors(ICPS2010)
Place of Presentation
COEX, Seoul
Year and Date
2010-07-27
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[Presentation] Superconductor-like Phenomenon in the Bilayer ν =1 Quantum Hall State2010
Author(s)
A.Sawada, A.Fukuda, S.Tsuda, T.Arai, K.Iwata, D.Terasawa, M.Morino, S.Kozumi, Y.Ogasawara
Organizer
International Symposium on Physics of New Quantum Phases in Superclean Materials(PSM2010)
Place of Presentation
Hamagin Hall "VIAMARE", Yokohama, Japan
Year and Date
2010-03-09
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