教師資料查詢 | 類別: 期刊論文 | 教師: 張經霖 CHANG, HENRY CHING-LIN (瀏覽個人網頁)

標題:X-Ray spectra and electronic correlations of FeSe1-xTex
學年
學期
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
語言英文
ISSN1463-9076;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
國別英國
公開徵稿
出版型式紙本
相關連結
SDGs
Google+ 推薦功能,讓全世界都能看到您的推薦!