| Budget Amount *help |
¥27,690,000 (Direct Cost: ¥21,300,000、Indirect Cost: ¥6,390,000)
Fiscal Year 2013: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2012: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2011: ¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
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| Research Abstract |
The purpose of the present project is to perform scanning tunneling potentiometry (STP) measurements on surface Rashba systems and explore the intriguing nature of its charge/spin transport phenomena. Therefore we have newly constructed a scanning tunneling microscope (STM) and furthermore, made our own measurement system for STP measurements. We have shown that it is possible to simultaneously map the surface topography with STM while mapping the potential distribution with STP when applying electrical current through the surface. Using ultrathin Bi films formed on Si(111) substrates, we have shown that the potential gradient can be measured properly. We have additionally found a way to micro fabricate surface states in situ and measure the spin Hall effect using nonlocal transport measurements using ultrathin Bi2Se3 films.
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