Quantum rotational tunneling of methyl groups in polymers

被引：71

作者：

Colmenero, J

Mukhopadhyay, R

Alegria, A

Frick, B

机构：

[1] Univ Basque Country, Dept Fis Mat, San Sebastian 20080, Spain

[2] Inst Laue Langevin, F-38042 Grenoble, France

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.80.2350

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Quantum rotational tunneling of methyl groups has directly been observed for the first time in polymers by high resolution inelastic neutron scattering. The experimental results are readily explained and reproduced quantitatively, without any adjustable parameter, by considering the distribution of tunneling lines which is obtained from the distribution of energy barriers for classical hopping of methyl groups at high temperature.

引用

页码：2350 / 2353

页数：4

共 7 条

[1] METHYL-GROUP DYNAMICS IN POLY(VINYL METHYL-ETHER) - A ROTATION RATE DISTRIBUTION MODEL [J].