NEUTRON-SCATTERING OF THE TO PHONON IN CUCL AT 5-K

被引：25

作者：

HENNION, B

PREVOT, B

KRAUZMAN, M

PICK, RM

DORNER, B

机构：

[1] UNIV PARIS 06, CNRS, DEPT RECH PHYS 71, F-75230 PARIS 05, FRANCE

[2] INST MAX VON LAUE PAUL LANGEVIN, F-38042 GRENOBLE, FRANCE

[3] UNIV LOUIS PASTEUR, CNRS, SPECT & OPT CORPS SOLIDE LAB 232, F-67000 STRASBOURG, FRANCE

来源：

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS | 1979年 / 12卷 / 09期

关键词：

D O I：

10.1088/0022-3719/12/9/005

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

By inelastic coherent neutron scattering experiments performed in various Brillouin zones, it is shown that the lineshape of the TO phonon at, and in the vicinity of, q=0 has a double peak structure. The analysis of the data confirms and extends a previously proposed model in which this line shape is explained by a strong interaction between the harmonic TO phonon (the dispersion of which is here obtained) and a two-phonon density of states which is found to be independent of q.

引用

页码：1609 / 1624

页数：16

共 16 条

[1]

BRAFMAN O, UNPUBLISHED

[2]

BRANDT NB, 1978, JETP LETT, V27, P37

[3] RESOLUTION FUNCTION IN NEUTRON DIFFRACTOMETRY .I. RESOLUTION FUNCTION OF A NEUTRON DIFFRACTOMETER AND ITS APPLICATION TO PHONON MEASUREMENTS [J].