| Budget Amount *help |
¥28,600,000 (Direct Cost: ¥22,000,000、Indirect Cost: ¥6,600,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥25,350,000 (Direct Cost: ¥19,500,000、Indirect Cost: ¥5,850,000)
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| Outline of Final Research Achievements |
We demonstrated electrical spin injection with InGaAs based quantum point contact which holds strong spin orbit interaction. By applying side gates in the quantum point contact, we can induce not only one dimensional channel for electrons but also spatial change of effective magnetic fields induced by spin orbit interaction. This acts to spin dependent force for electron spin resulting in the spatial separation of up spin and down spin. We observed 0.5(2e^2/h) conductance plateau and, by applying external magnetic fields, we confirmed the spin polarized direction and spin polarization.
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