| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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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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