| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Outline of Final Research Achievements |
We studied magnetic properties of two dimensional electron systems at SrTiO3 (001) surfaces，which were induced by electric field in the electric double layer transistor (EDLT) device configurations. While SrTiO3 is a well-known nonmagnetic oxide in bulk, the surface electron system of it with the carrier densities higher than 0.15 per one unit cell area shows the anisotropic magnetoresistance and the planar Hall effects, which are usually observed in ferromagnetic thin films. Through the detailed measurements of magnetization and in-plane anisotropy of magnetotransports, controlled by the gate voltage in the EDLT devices, we found that the observed magnetic properties do not caused by the ferromagnetic order but results from the spin alignment phenomena with a special spin texture, originating from a Rashba-type spin-orbit coupling enhanced with multi-orbital hybridization effect in Ti-3d electrons.
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