| Budget Amount *help |
¥19,630,000 (Direct Cost: ¥15,100,000、Indirect Cost: ¥4,530,000)
Fiscal Year 2014: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2013: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2012: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
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| Outline of Final Research Achievements |
Because of the excellent electronic conduction resulting from massless Dirac fermions, Graphene is a promising candidate material for next generation (post-silicon) electronic devices. As a beyond-Graphene technology, we tried to develop both new compounds and novel electronic functionality within a new class of materials called "topological insulators". Highlights of this work are as follows:
(1) A "polar" topological insulator was for the first time materialized, which could make topological electronic devices quite simple [Nature Physics].
(2) Unlike Graphene, the massless Dirac fermions in the topological insulators were proved to be quite stable against the imperfection of the materials. It was further demonstrated that the Dirac surface state and associated spin distribution could be locally (in nano-scale) manipulated by the bias voltage and magnetic field [ACS Nano, Nature Physics].
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