PHONON-INDUCED CORRECTIONS TO GROUND-STATE SPLITTING OF S-STATE IONS IN CUBIC CRYSTALS

被引：45

作者：

SHRIVASTAVA, KN

机构：

[1] Department of Physics, Montana State University, Bozeman

[2] Department of Physics, University of Nottingham

来源：

PHYSICAL REVIEW | 1969年 / 187卷 / 02期

关键词：

D O I：

10.1103/PhysRev.187.446

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ground S6 and excited L4 states of the Mn2+ ion are perturbed by the cubic crystalline field and mixed by the spin-orbit coupling. A two-phonon Raman process, second order in the orbit-lattice interaction, is found to contribute to the ground-state splitting. The theory is developed within the framework of Van Vleck's small-wave-vector averaging procedure for acoustic phonons. Both the zero-point vibrational contribution and the temperature-dependent parts are calculated and compared with experimental measurements in Mn2+-doped MgO. Good qualitative agreement between the theory and experiment is found but quantitative agreement is not obtained. © 1969 The American Physical Society.

引用

页码：446 / +

页数：1

共 32 条

[21] ZERO-FIELD SPLITTING OF S-STATE IONS .2. OVERLAP AND COVALENCY MODEL [J].