Spectral signature of low temperature hopping between two impurity-induced elastic configurations

被引：7

作者：

Lai, R ^{[1
]}

Mungan, CE ^{[1
]}

Sievers, AJ ^{[1
]}

机构：

[1] CORNELL UNIV,CTR MAT SCI,ITHACA,NY 14853

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.76.1864

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate that the jump-rotational-diffusion model originally developed in the context of quasielastic neutron scattering from high temperature liquids can describe the two-state behavior observed in the low temperature dynamics of some molecular and point defects in crystals. The unusual temperature dependences of the IR spectra of both diatomic chalcogen hydrides in alkali halides and KI:Ag+ can be explained in terms of two elastic configurations between which the impurities jump with temperature-dependent dwell times.

引用

页码：1864 / 1867

页数：4

共 15 条

[1]

BILZ H, 1984, ENCYCL PHYS, V25, P420

[2] EVIDENCE FOR A TEMPERATURE-DEPENDENT TUNNELING PARAMETER [J].