2015 Fiscal Year Final Research Report
c-axis charge dynamics in iron-based superconductors
| Project/Area Number |
26800187
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics II
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| Research Institution | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2016-03-31
|
| Keywords | 鉄系超伝導体 / 単結晶育成 / 光学スペクトル |
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| Outline of Final Research Achievements |
In order to extract the universal properties of FeAs layers in various iron-based superconductors, we have studied the three dimensional electronic structure using single crystals of Ba(Fe,Co)2As2 and Sr4V2O6Fe2As2. From the c-axis optical spectrum of overdoped Ba(Fe,Co)2As2, it is turned out that the semiconducting c-axis behavior in low-temperature resistivity does not arise from the charge-gap opening. We succeeded in growing almost millimeter-sized single crystals of Sr4V2O6Fe2As2 for the first time, and revealed that the physical properties is sensitive to the amount of oxygen deficiency.
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| Free Research Field |
高温超伝導
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