| Budget Amount *help |
¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
Fiscal Year 2020: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Fiscal Year 2018: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Outline of Final Research Achievements |
Transport properties of quantum point contacts (QPCs), which are the basis of semiconductor quantum structures, have been studied using a new type of NMR (resistively detected NMR, RDNMR). The RDNMR was successfully applied in low-magnetic-field region. It was also applied to measure microscopic strain variation. Furthermore, we first found an even-denominator plateau in the QPC diagonal resistance and suggested a possible contribution of mixing of counter-propagating edge channels. In addition, we have successfully demonstrated InSb-QPCs by using trench gates and MRI in semiconductor quantum systems by combining nanoprobe and RDNMR.
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