2012 Fiscal Year Final Research Report
Development and application of scanning tunneling miscroscope that has femtosecond time resolution
| Project/Area Number |
22686005
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | University of Tsukuba |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
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| Keywords | 走査プローブ顕微鏡 |
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| Research Abstract |
Conventional time-resolved scanning tunneling microscopes(TR-STM) have so long laser repetition periods of ~1 μs that their signal level falls when ultrafast phenomena of time scales less than 1 ns are observed. To solve the problem, two new setups for TR-STM are proposed and confirmed the efficiencies. One of them allowed us to successfully measure decay process of the electron spins in a GaAs sample whose time scale is about 5 ps
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