| Budget Amount *help |
¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000)
Fiscal Year 2012: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2011: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2010: ¥12,090,000 (Direct Cost: ¥9,300,000、Indirect Cost: ¥2,790,000)
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| Research Abstract |
Using a pump-probe method, we have succeeded in observing time-resolved STM light emission spectra. The STM light emission spectra of Sb2Te3 drastically varied in the optical delay time range from 13 ps to 0 ps. If one assumes that this variation is caused by phonons, the lifetime of phonons involved is reduced to around 6 ps. However, the mechanism that gives rise to such a variation has not been well understood yet. We carried out similar measurements for nanometer-scale structures, and found that the time resolved STM light emission spectra also show size effects.
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