| Budget Amount *help |
¥13,390,000 (Direct Cost: ¥10,300,000、Indirect Cost: ¥3,090,000)
Fiscal Year 2017: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2016: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2015: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2014: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
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| Outline of Final Research Achievements |
We constructed general theories on phase transitions of topological materials. For example, we showed that a closing of a gap of an insulator without inversion symmetry always leads to a topological semimetal. We also constructed a theory on superlattices of topological semimetals, and a theory on surface-state dispersions of Weyl semimetals. We also proposed various new topological materials, such as tellurium at high pressure as a Weyl semimetal, and calcium at high pressure as a nodal-line semimetal. We also unveiled new physical phenomena of topological materials. We proposed a concept of interfacial symmetries and revealed appearance of novel interfacial states. We also showed an anomalous dielectric response of bilayer graphene ribbons by an interlayer bias voltage.
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