Pressure-induced changes in the electron density distribution in alpha-Ge near the alpha-beta transition
文献类型：期刊论文
| 作者 | Li R(李蕊) ; Liu J(刘景); Li, R; Liu, J; Bai, LG; Tse, JS; Shen, GY
|
| 刊名 | APPLIED PHYSICS LETTERS
 |
| 出版日期 | 2015 |
| 卷号 | 107期号:7页码:72109 |
| 英文摘要 | Electron density distributions in alpha-Ge have been determined under high pressure using maximum entropy method with structure factors obtained from single crystal synchrotron x-ray diffraction in a diamond anvil cell. The results show that the sp(3) bonding is enhanced with increasing pressure up to 7.7(1) GPa. At higher pressures but below the alpha-beta transition pressure of 11.0(1) GPa, the sp(3)-like electron distribution progressively weakens with a concomitant increase of d-orbitals hybridization. The participation of d-orbitals in the electronic structure is supported by Ge K beta(2) (4p-1s) x-ray emission spectroscopy measurements showing the reduction of 4s character in the valence band at pressures far below the alpha-beta transition. The gradual increase of d-orbitals in the valence level in the stability field of alpha-Ge is directly related to the eventual structural transition. (C) 2015 AIP Publishing LLC. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Applied |
| 收录类别 | SCI ; EI ; CA |
| WOS记录号 | WOS:000360390500028 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/228755]  |
| 专题 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Li R,Liu J,Li, R,et al. Pressure-induced changes in the electron density distribution in alpha-Ge near the alpha-beta transition[J]. APPLIED PHYSICS LETTERS,2015,107(7):72109. |
| APA | 李蕊.,刘景.,Li, R.,Liu, J.,Bai, LG.,...&Shen, GY.(2015).Pressure-induced changes in the electron density distribution in alpha-Ge near the alpha-beta transition.APPLIED PHYSICS LETTERS,107(7),72109. |
| MLA | 李蕊,et al."Pressure-induced changes in the electron density distribution in alpha-Ge near the alpha-beta transition".APPLIED PHYSICS LETTERS 107.7(2015):72109. |
入库方式： OAI收割
来源：高能物理研究所
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