Negative heat capacity for a cluster of 147 sodium atoms

被引：298

作者：

Schmidt, M ^{[1
]}

Kusche, R ^{[1
]}

Hippler, T ^{[1
]}

Donges, J ^{[1
]}

Kronmüller, W ^{[1
]}

von Issendorff, B ^{[1
]}

Haberland, H ^{[1
]}

机构：

[1] Univ Freiburg, Fak Phys, D-79104 Freiburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.86.1191

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

There exists a surprising theoretical prediction for a small system: its microcanonical heat capacity can become negative. An increase of energy can-under certain conditions-lead to a lower temperature. Here we present experimental evidence that a cluster containing exactly 147 sodium atoms does indeed have a negative microcanonical heat capacity near its solid to liquid transition.

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收藏

页码：1191 / 1194

页数：4

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