| Budget Amount *help |
¥46,150,000 (Direct Cost: ¥35,500,000、Indirect Cost: ¥10,650,000)
Fiscal Year 2014: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2013: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2012: ¥24,570,000 (Direct Cost: ¥18,900,000、Indirect Cost: ¥5,670,000)
Fiscal Year 2011: ¥10,920,000 (Direct Cost: ¥8,400,000、Indirect Cost: ¥2,520,000)
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| Outline of Final Research Achievements |
We have investigated methods for controlling magnetic properties using spin currents and obtained following results: We have succeeded in fully describing spin current properties including the anisotropic spin absorption in lateral spin valves, which enables one to elucidate intrinsic spin relaxation mechanisms in nonmagnets. We have designed the best material exhibiting large spin Hall angle based on the first principle calculation and experimentally demonstrated that Cu-Bi dilute alloys exhibited a giant spin Hall angle, charge to spin currents interconversion efficiency of about 24%. Spin torque ferromagnetic resonance experiments demonstrated that the effective damping constant of Permalloy can be modulated 20% via the spin Hall effect of platinum. We have succeeded in injecting quasi particle mediated spin currents into superconducting niobium and discovered the spin lifetime was enhanced by 400%. This achievement led to the quasi-particle mediated giant spin Hall effect.
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