BRILLOUIN-SCATTERING IN SALOL - DETERMINING T(C) OF THE MODE-COUPLING THEORY

被引：67

作者：

DREYFUS, C

LEBON, MJ

CUMMINS, HZ

TOULOUSE, J

BONELLO, B

PICK, RM

机构：

[1] CUNY CITY COLL, NEW YORK, NY 10031 USA

[2] LEHIGH UNIV, DEPT PHYS, BETHLEHEM, PA 18015 USA

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.69.3666

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Brillouin scattering spectra of the molecular glass former salol were combined with ultrasonic measurements to evaluate the nonergodicity parameter of mode coupling theory f0(T). It was found to exhibit a weak cusp at a temperature T(c)B=275 +/- 10 K, in reasonable agreement with the mode-coupling crossover temperature T(c)=256 +/- 5 K found recently by other methods. This result is in marked contrast to the recent publication of Elmroth, Borjesson, and Torell [Phys. Rev. Lett. 68, 79 (1992)].

引用

页码：3666 / 3669

页数：4

共 31 条

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