| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Research Abstract |
In order to understand the origin of spin ice correlations and quantum fluctuations of Pr magnetic moments in magnetic pyrochlore oxides Pr_2(Ir, Sn)_2O_7, the superexchange interaction between Pr moments has been derived microscopically. Then, I have shown that this theoretical model can host a state characterized by a quantum melting of spin ice and have explained the anomalous Hall conductivity in the chiral spin liquid phase. Generalizing this theoretical framework, neutron-scattering experiments on Pr & _2Sn_2O_7 and Yb & _2Ti_2O_7 have been explained successfully.
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