2016 Fiscal Year Final Research Report
Study of topology and zero gap materials of Dirac electrons in molecular conductor
| Project/Area Number |
26400355
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 分子性導体 / ディラック点 / 偶奇性 / トポロジー / ディラック・コーン / ゼロギャップ |
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| Outline of Final Research Achievements |
The mechanism of emergence of Dirac point was studied using topology. When organic conductor has inversion symmetry, the parity of the wave function shows a topological property and is crucial to obtain the condition of the Dirac point. Next, studying a Dirac material of three-dimensional molecular conductor with HOMO and LUMO orbitals, we found the nodal line semimetal with a loop of the Dirac point in terms of the parity. Thus two kinds of conflicting ingredients are essential for the Dirac electron which is determined by the topological conditions. Further, we proposed a theory that the tilting of the Dirac cone is understood by the angle-dependent conductivity.
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| Free Research Field |
数物系科学
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