| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
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| Outline of Final Research Achievements |
We investigate the photoinduced bidirectional magnetism in Cu2[Mo(CN)8] consisting of square-antiprism-type Mo complexes. If we irradiate this material with blue laser light, it turns from paramagnetic to ferromagnetic. When we further irradiate this magnetized state with orrange laser light, the material is again demagnetized strongly.
First we elucidate the ground-state properties through a group-theoretical analysis. There appear a few different types of antiferromagnetism as well as ferromagnetism of our particular interest. With a realistic set of parameters, the material lies in the paramagnetic down to low temperatures. Then we numerically integrate the time-dependent Schroedinger equation and track the magnetization. The magnetization is indeed enhanced by blue laser light irradiation and again reduced by orrange laser light irradiation. Surprisingly, the final steady demagnetized state is qualitatively different from the initial static paramagnetic state.
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