EVIDENCE OF 2-PHONON VIBRONIC PROGRESSIONS IN LAYERED 3D-METAL DIHALIDES

被引：21

作者：

BENEDEK, G

POLLINI, I

PISERI, L

TUBINO, R

机构：

[1] MAX PLANCK INST FESTKORPERFORSCH, D-7000 STUTTGART 80, GERMANY

[2] CNR, IST CHIM MACROMOLEC, I-20133 MILAN, ITALY

来源：

PHYSICAL REVIEW B | 1979年 / 20卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.20.4303

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Experimental evidence of two-phonon vibronic progressions due to second-order linear electron-phonon interactions is obtained in NiCl2 and NiBr2 crystals, by comparing the phonon structure observed in A23(F)E1(D) transition with Raman data. The vanishing of the spin-dependent first-order electron-phonon interaction is shown to be a necessary condition for observing prominent second-order phonon structures in isoconfigurational crystal-field transitions. According to this rule we predict and discuss the appearance of second-order progressions in other d-metal layered compounds. © 1979 The American Physical Society.

引用

页码：4303 / 4307

页数：5

共 25 条

[1]

BAUHOFER W, UNPUBLISHED

[2]

BAUHOFER W, COMMUNICATION

[3]

BENEDEK G, 1978, 1977 P INT C LATT DY, P68

[4]

BENEDEK G, UNPUBLISHED