2014 Fiscal Year Final Research Report
Study for the repeating unit in the charge fluctuated state for the molecular superconductors
| Project/Area Number |
24750127
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Functional materials chemistry
|
|---|
| Research Institution | Ehime University (2013-2014)
Osaka University (2012) |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2012-04-01 – 2015-03-31
|
| Keywords | 分子性導体 / 有機導体 / 電荷揺らぎ / 振動スペクトル / 電子相関 / 応力実験 / 軌道準位逆転 |
|---|
| Outline of Final Research Achievements |
The two-dimensional molecular superconductors are classified into two groups from the viewpoint of their structures: Group A) the two-dimensional layer consists of a tightly bounded dimer, Group B) any tightly bounded dimer is not formed in the layer. It is accepted that the charge fluctuation plays an important role in the superconducting phase transition for Group B. However, the charge fluctuation has not been elucidated for Group A. The number of the molecule in the repeating unit, where charges show the fluctuation, N, has been examined by applying the vibrational spectroscopy to the β'-type [Pd(dmit)2]2 salts, non-β'-type [Pd(dmit)2]2 salts, β-type ET salts and κ-type ET salts. It is found that the superconductor shows N = 4 whereas N = 2 and 8 for the semiconductors. This result is consistent with the previous result for the Group A.
|
| Free Research Field |
機能分子化学
|
