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, Rui1,2,3; Liu, Jing1; Bai, Ligang2; Tse, John S.4; Shen, Guoyin2 |
| 刊名 | Applied physics letters
 |
| 出版日期 | 2015-08-17 |
| 卷号 | 107期号:7页码:5 |
| ISSN号 | 0003-6951 |
| DOI | 10.1063/1.4929368 |
| 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. |
| 语种 | 英语 |
| WOS记录号 | WOS:000360390500028 |
| 出版者 | AMER INST PHYSICS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/1639632 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Shen, Guoyin |
| 作者单位 | 1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Carnegie Inst Sci, HPCAT Geophys Lab, Argonne, IL 60439 USA 3.Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada |
| 推荐引用方式 GB/T 7714 | Li, Rui,Liu, Jing,Bai, Ligang,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):5. |
| APA | Li, Rui,Liu, Jing,Bai, Ligang,Tse, John S.,&Shen, Guoyin.(2015).Pressure-induced changes in the electron density distribution in alpha-ge near the alpha-beta transition.Applied physics letters,107(7),5. |
| MLA | Li, Rui,et al."Pressure-induced changes in the electron density distribution in alpha-ge near the alpha-beta transition".Applied physics letters 107.7(2015):5. |
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来源：高能物理研究所
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