2012 Fiscal Year Final Research Report
Electronic Spectroscopy in Superconducting Diamond: Superconductivity and Disorder Effect near the Insulator Transition
| Project/Area Number |
22540360
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
TAKANO Yoshihiko 独立行政法人物質・材料研究機構, 超伝導 材料研究センター, グループリーダー (10354341)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 超伝導材料 / 低温物性 / 走査プローブ顕微鏡 / 物性実験 |
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| Research Abstract |
We have performed electronic spectroscopy and observed superconducting electronic states in boron-doped diamond by using scanning tunneling microscope in order to study the effect of the disorder on the superconductivity near the metal-insulator transition. We have observed the boron concentration dependence of the tunneling spectra and the spatial variation of the local density of states. The results indicate that the boron doping enhances not only the carrier concentration but also the disorder density.
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