| Budget Amount *help |
¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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)
Fiscal Year 2013: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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| Outline of Final Research Achievements |
We have discovered an organic conductor which 2D massless Dirac electron system was realized under high pressure. This is the first bulk massless Dirac electrons system. Moreover, according to the band calculation, the Dirac cones of this system are highly tilted. Thus, this material belongs to a broader category of 2D massless Dirac electrons system. However, both Shubnikov-de Haas (SdH) oscillations and quantum Hall effect (QHE) have not been observed yet in this system, because the Fermi level is always located at the Dirac point. Thus, the relativistic Landau levels has not directly been obtained yet. In this work, we succeeded in injecting carriers into this system. Significant is that SdH oscillations whose phase was modified by π Berry’s phase and half integer QHE were detected at low temperature. The detail examination of this quantum phenomena led to the reconstruction of the Dirac cones. Moreover, the tilt parameters of the Dirac cone were determined.
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