| Budget Amount *help |
¥24,700,000 (Direct Cost: ¥19,000,000、Indirect Cost: ¥5,700,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2016: ¥20,670,000 (Direct Cost: ¥15,900,000、Indirect Cost: ¥4,770,000)
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| Outline of Final Research Achievements |
In this research, we aimed to study the correlated quantum transport phenomena in a layered bulk magnet EuMnBi2 to reveal the fundamental physics of Dirac fermions coupled with magnetism. To show the variation of band structure upon the antiferromagnetism in EuMnBi2, we have first studied the Landau level splitting in a tilted magnetic field up to ~35 T and found effective g factor differs by ~50% between two antiferromagnetic phases, which reflects the strong exchange coupling with Eu spins as verified by first-principles calculations. We have also studied the details of field-tunable antiferromagnetic order of both Eu and Mn layers by the neutron diffraction and discussed its impact on the spin-flop-induced giant magnetoresistance effects in the present system.
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