期刊論文
| 學年 | 99 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2011-01-01 |
| 作品名稱 | X-Ray spectra and electronic correlations of FeSe1-xTex |
| 作品名稱（其他語言） | |
| 著者 | Chen, C. L.; Dong, C. L.; Chen, J. L.; Guo, J.-H.; Yang, W. L.; Hsu, C. C.; Yeh, K. W.; Huang, T. W.; Mok, B. H.; Chan, T. S.; Lee, J. F.; Chang, C. L.; Rao, S. M.; Wu, M. K. |
| 單位 | 淡江大學物理學系 |
| 出版者 | Cambridge: R S C Publications |
| 著錄名稱、卷期、頁數 | Physical Chemistry Chemical Physics 13(34), pp.15666-15672 |
| 摘要 | Critical issues concerning emerging Fe-based superconductors include the degree of electron correlation and the origin of the superconductivity. X-Ray absorption spectra (XAS) and resonant inelastic X-ray scattering spectra (RIXS) of FeSe1−xTex (x = 0–1) single crystals were obtained to study their electronic properties that relate to electron correlation and superconductivity. The linewidth of Fe L2,3-edges XAS of FeSe1−xTex is narrower than that of Fe–pnictides, revealing the difference between their hybridization effects and localization character and those of other Fe–pnictides. While no significant differences exist between the Fe L-edge XAS and RIXS of FeSe1−xTex and those of Fe–pnictides, Se K-edge and Te K-edge XAS exhibit substantial edge shift, suggesting that the superconductivity in an Fe–Se superconductor is strongly associated with the ligand states. A comparison of the Se K-edge and Te K-edge spectra reveals that the charge transfer may occur between Se and Te. Given the Coulomb interaction and the bandwidth, the spectral results indicate that FeSe1−xTex is unlikely to be a weakly correlated system unlike the Fe–pnictides of the “1111” and “122” families. The spectral results further demonstrate that superconductivity in this class of Fe-based compounds is strongly associated with the ligand 4p hole state. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 1463-9076 1463-9084 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | Dong, C. L. |
| 審稿制度 | 是 |
| 國別 | GBR |
| 公開徵稿 | |
| 出版型式 | 紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/88838 ) |