| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Outline of Final Research Achievements |
In order to investigate unique spin states in triangular lattices with spin S=1/2, we have measured magnetic properties in a wide temperaure and magnetic field region for k-type magnetic organic conductors. We measured the magnetic properties for k-(BDH-TTP)2FeX4 (X = Br, Cl) and developed an analysis technique of the magnetic torque data. We also performed SQUID and torque measurements for k-H-3(Cat-EDT-TTF)2 in detail and clarified the spin-liquid ground state, showing a constant magnetic susceptibility at low temperatures down to 50mK. We observed that the susceptibility shows divengence behavior at low temperature magnetic fields for k-(BEDT-TTF)2Cu2(CN)3, which can be ascribed to quantum critical behavior. This salt is found to show metallic conductivity at 0.5 GPa, but we cound not see quantum oscillations at low temperatures and high magnetic fields.
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