Four-time rotational correlation functions

被引：20

作者：

Hinze, G ^{[1
]}

Diezemann, G ^{[1
]}

Sillescu, H ^{[1
]}

机构：

[1] Johannes Gutenberg Univ Mainz, Inst Phys Chem, D-55099 Mainz, Germany

来源：

EUROPHYSICS LETTERS | 1998年 / 44卷 / 05期

关键词：

D O I：

10.1209/epl/i1998-00510-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A scheme to analyze four-time rotational correlation functions of any rank is developed and details for rank L = I and 2 are given. The scheme provides a transparent way for identifying deviations from simple Markovian dynamics as observed, e.g., in complex liquids close to the glass transition. The method should be applicable to NMR and optical multiple-pulse techniques as well as to photon correlation spectroscopy. Results are given for H-2-NMR multiple-pulse data in supercooled glycerol. We identify and analyze the dynamical heterogeneity of molecular reorientation in a range of 205-215 K close to the glass temperature T-g = 190 K.

引用

页码：565 / 570

页数：6

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