1/F SPECTRA IN FINITE ATOMIC CLUSTERS

被引：26

作者：

NAYAK, SK ^{[1
]}

RAMASWAMY, R ^{[1
]}

机构：

[1] INDIAN INST TECHNOL,DEPT PHYS,NEW DELHI 110016,INDIA

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.74.4181

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study small clusters of atomic argon, Ar7, Ar13, and Ar55, in the temperature range when they undergo a transition from a solidlike phase to a liquidlike phase. The power spectra of potential energy fluctuations of tagged atoms in the liquid state show 1/f behavior over a wide range of frequency f, unlike either the solid phase or bulk liquid, and suggest a new experimental means of detecting cluster melting. The origin of this temporal scale invariance is explored by studying the individual potential energy distributions, which are observed to become multimodal when the clusters melt. © 1995 The American Physical Society.

引用

页码：4181 / 4184

页数：4

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