RESONANT RAMAN-SCATTERING ON LOW-ENERGY EXCITED-STATES OF FE-2+ IN CD1-XFEXSE

被引：13
作者：
SCALBERT, D
GAJ, JA
MAUGER, A
CERNOGORA, J
LAGUILLAUME, CBA
MYCIELSKI, A
机构：
[1] Groupe de Physique des Solides de l'Ecole Normale Supérieure, Tour 23, Université Paris VII, 2 Place Jussieu
来源：
JOURNAL OF CRYSTAL GROWTH | 1990年 / 101卷 / 1-4期
关键词：
D O I：
10.1016/0022-0248(90)91111-3
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The spectrum of low energy excited states of Fe2+ in Cd1-xFexSe has been studied through Raman scattering. (1) The energy position of the first two excited states of symmetry A2 and E have been determined as a function of the applied magnetic field ⊥ c and ∥|c up to 6 T; they are in very good agreement with a crystal field model. (2) Strong resonant effects on free and bound exciton states have been observed and explained. (3) Above the free exciton level, a cascade process involving mainly n(A1→A2) excitations is studied. Backscattering on a face ⊥ c strongly favours crossed linear polarizations at each step of the cascade; a longitudinal magnetic field causes an analog of Hanle effect. Analysis of the data gives access to the polariton lifetime and its probability of inelastic scattering on Fe2+ ions. © 1989.
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页码：940 / 943
页数：4
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