資料載入中.....
|
請使用永久網址來引用或連結此文件:
https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/96227
|
| 題名: | X-Ray spectra and electronic correlations of FeSe1-xTex |
| 作者: | 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. |
| 貢獻者: | 淡江大學物理學系暨研究所 |
| 日期: | 2011 |
| 上傳時間: | 2014-03-06 15:54:42 (UTC+8) |
| 出版者: | Cambridge: R S C Publications |
| 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. |
| 關聯: | Physical Chemistry Chemical Physics 34, pp. 15666-15672 |
| DOI: | 10.1039/c1cp20765b |
| 顯示於類別: | [物理學系暨研究所] 期刊論文
|
文件中的檔案:
| 檔案 |
描述 |
大小 | 格式 | 瀏覽次數 |
|---|
| index.html | | 0Kb | HTML | 322 | 檢視/開啟 | | X-Ray spectra and electronic correlations of FeSe1-xTex.pdf | | 1911Kb | Adobe PDF | 429 | 檢視/開啟 |
|
在機構典藏中所有的資料項目都受到原著作權保護.
|
