中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Energy spectra, g factors and their pressure-induced and/or thermal shifts of SrTiO3 : Cr3+ and SrTiO3 : Mn4+ II: Pressure effects on ground-state g factor and splittings of t(2)(3) E-2 and t(2)(3) (4)A(2) of SrTiO3 : Cr3+

文献类型:期刊论文

作者D. P. Ma ; J. P. Zhang
刊名Communications in Theoretical Physics
出版日期2001
卷号35期号:5页码:627-634
关键词crystal fields energy spectrum g factors high-pressure effect strain-induced splitting theoretical calculations ruby crystal
ISSN号0253-6102
中文摘要By using the wavefunctions obtained from diagonalizing the complete d(3) energy matrix at normal and various pressures, the g factor of the ground state of SrTiO3:Cr3+ and its pressure-induced shift have been microscopically calculated. Only by taking the local strains around Cr3+ in SrTiO3:Cr3+ (which are about twice the bulk ones) and corresponding P-chi dependence, can we obtain a good agreement between the calculated result of pressure-induced shift of ground-state g factor and the experimental one. The physical origins of this pressure-induced shift have been explained. It is found that the change of Dq(-1) with pressure makes main contribution to the pressure-induced shift of ground-state g factor of SrTiO3:Cr3+. By using the wavefunctions obtained from diagonalizing the complete d3 energy matrix at normal pressure, the relevant matrix elements and accordingly strain-induced splittings of t(2)(3) E-2 and t(2)(3) (4)A(2) of SrTiO3:Cr3+ have been calculated. The important results of Y-c, Z(c), P-c and Q(c) have also been evaluated. It is the admixtures of basic wavefunctions resulted from the spin-orbit interaction and/or Coulomb interaction and/or Kramers degeneracy that make the strain-induced splittings of the levels nonzero. It is found that there are nonvanishing matrix elements of operators T2 xi, T2 eta and T2 zeta between wavefunctions with positive M-s and those with negative M-s', which have important effects on the strain-induced splittings of the levels.
原文出处://WOS:000169609100022
公开日期2012-04-14
源URL[http://ir.imr.ac.cn/handle/321006/36752]  
专题金属研究所_中国科学院金属研究所
推荐引用方式
GB/T 7714
D. P. Ma,J. P. Zhang. Energy spectra, g factors and their pressure-induced and/or thermal shifts of SrTiO3 : Cr3+ and SrTiO3 : Mn4+ II: Pressure effects on ground-state g factor and splittings of t(2)(3) E-2 and t(2)(3) (4)A(2) of SrTiO3 : Cr3+[J]. Communications in Theoretical Physics,2001,35(5):627-634.
APA D. P. Ma,&J. P. Zhang.(2001).Energy spectra, g factors and their pressure-induced and/or thermal shifts of SrTiO3 : Cr3+ and SrTiO3 : Mn4+ II: Pressure effects on ground-state g factor and splittings of t(2)(3) E-2 and t(2)(3) (4)A(2) of SrTiO3 : Cr3+.Communications in Theoretical Physics,35(5),627-634.
MLA D. P. Ma,et al."Energy spectra, g factors and their pressure-induced and/or thermal shifts of SrTiO3 : Cr3+ and SrTiO3 : Mn4+ II: Pressure effects on ground-state g factor and splittings of t(2)(3) E-2 and t(2)(3) (4)A(2) of SrTiO3 : Cr3+".Communications in Theoretical Physics 35.5(2001):627-634.

入库方式: OAI收割

来源:金属研究所

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