2017 Fiscal Year Final Research Report
study of electronic state mapping using oxygen
| Project/Area Number |
26706015
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Partial Multi-year Fund |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Keywords | EELS / STEM / 電子状態マッピング |
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| Outline of Final Research Achievements |
This research project intends to the realization of electronic state mapping of oxygen with atomic resolution using scanning transmission electron microscopy (STEM) and electron energy loss spectroscopy (EELS).First of all, we established a method for measuring high signal-to-noise ratio spectrum from individual atomic site without damage.Then, we succeeded for the first time in atomic-resolution two-dimensional mapping of holes in cuprate superconductors using an advanced technique. In addition, we have demonstrated the anisotropic chemical bond related to the difference between px and py orbitals was observed with atomic resolution.The results enables atomic-resolution anisotropic spectroscopy and is expected to give complementary information to the polarization-dependent X-ray absorption spectroscopy (XAS) which is widely used.
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| Free Research Field |
電子顕微鏡学
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