2011 Fiscal Year Final Research Report
Competition of multi-degrees of freedom and multicriticality in strongly correlated electron systems.
| Project/Area Number |
21340105
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | Waseda University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
MORI Shigeo 大阪府立大学, 工学研究科, 教授 (20251613)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 量子臨界点 / スピン / 軌道 |
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| Research Abstract |
We discovered new systems in which two different ordered states are competing and those produce a multicritical point : Ba^<1-x> Sr^xV^<13> O^1 and La^5M^<o4> O^<16>, and we found characteristic physical properties produced by the multicriticality in these systems. Furthermore, we clarified the critical enhancement of both spin and orbital fluctuation in MnV^2O^4 by means of thermal conductivity measurement with applied magnetic field. We also clarified the electronic phase separation in perovskite manganites by means of electron diffraction measurement including the Lorentz electron microscope technique.
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[Journal Article] Formation of a Three-Dimensional Network of V Trimers in A^2V^<13> O^<22>(A=Ba, Sr)2010
Author(s)
J. Miyazaki, K. Matsudaira, Y. Shimizu, M. Itoh, Y. Nagamine, S. Mori, J. E. Kim, K. Kato, M. Takata, and T. Katsufuji
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Journal Title
Phys. Rev. Lett.
Volume: 10 4
Pages: 207201
Peer Reviewed
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