Microscopic-theoretical calculations of R-line thermal shifts and broadenings of Mgo : V2+

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	Microscopic-theoretical calculations of R-line thermal shifts and broadenings of Mgo : V2+
	D. P. Ma; Y. Y. Liu; N. Ma; J. R. Chen
	2002
发表期刊	Communications in Theoretical Physics
ISSN	0253-6102
卷号	37 期号:5 页码:631-636
摘要	A great improvement on a previous work (Phys, Rev. B48 (1993) 14067) has been made. By taking into account all the irreducible representations and their components in the electron-phonon interaction (EPI) as well as all the levels and the admixtures of basic wavefunctions within d(3) electronic configuration, the values of all the parameters in the expressions of thermal shift (TS) and thermal broadening (TB) from EPI for the ground level, R level and R line of MgO:V2+ have microscopically been evaluated; and then, both the TS and TB of R line and various contributions to them have uniformly been calculated. The results are in very good agreement with the experimental data. It is found that all the three terms of TS from EPI are red shifts; the term of the contribution to TS from thermal expansion is blue shift. The Raman term is the largest, and the other terms are also important for TS. The R-line TS of MgO:V2+ comes from the first-order term of EPI. The elastic Raman scattering of acoustic phonons plays a dominant role in R-line TB of MgO:V2+. For calculations of both the TS and TB, it is very important to take into account all the admixtures of wavefunctions.
部门归属	sichuan univ, dept appl phys, chengdu 610065, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china. sichuan univ, dept comp sci, chengdu 610064, peoples r china.;ma, dp (reprint author), sichuan univ, dept appl phys, chengdu 610065, peoples r china
关键词	Crystal Fields Optical Properties Electron-phonon Interaction Electronic Structure Thermal Shift And Broadening Thermal Expansion Pressure-induced Shifts Energy-spectrum Sharp Lines Ruby Temperature Mgo V2++
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WOS记录号	WOS:000175979800026
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/36366
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. P. Ma,Y. Y. Liu,N. Ma,et al. Microscopic-theoretical calculations of R-line thermal shifts and broadenings of Mgo : V2+[J]. Communications in Theoretical Physics,2002,37(5):631-636.
APA	D. P. Ma,Y. Y. Liu,N. Ma,&J. R. Chen.(2002).Microscopic-theoretical calculations of R-line thermal shifts and broadenings of Mgo : V2+.Communications in Theoretical Physics,37(5),631-636.
MLA	D. P. Ma,et al."Microscopic-theoretical calculations of R-line thermal shifts and broadenings of Mgo : V2+".Communications in Theoretical Physics 37.5(2002):631-636.