| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Outline of Final Research Achievements |
Charge density wave 1(CDW1) (1/2 0.5+δ 0）was observed for rare-earth low-dimensional materials RNIC2. The CDW1 was very sensitive to the external field such as magnetic field and physical pressure. In the present study, we developed single crystals for heavy rare-earth RNIC2 and observed another modulated structure at the reduced wave vector of (1/2 1/2 1/2) at higher transition temperature than that of CDW1. Using atomic coordinates observed Synchrotron radiation diffraction of CDW2 superstructure, we calculated the electronic structure and found the wave vector (1/2 1/2 1/2) of CDW2 was equal to the nesting vector of the Fermi surface. We proposed the structural phase diagram for RNIC2 including CDW1 and CDW2.
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