Calculation of λ-transition temperature in liquid 4He

被引：2
|
作者：
Sasaki, S [1 ]
机构：
[1] Shizuoka Inst Sci & Technol, Fukuroi 4378555, Japan
来源：
PHYSICA B-CONDENSED MATTER | 2003年 / 329卷
关键词：
lambda transition; superfluidity; He-4; phase diagram;
D O I：
10.1016/S0921-4526(02)01972-5
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In experiments of liquid He-4, the elementary excitation energy varies with changing of the temperature. This is caused by the non-linear dependence of the total energy upon the number-distribution of elementary excitations. Taking this effect into consideration, we can numerically calculate the lambda transition temperature. The results are 2.18 K for the saturated vapor pressure. Other calculated values are 2.8 K after Landau, and 3.16 K after London. Since the experimental value is 2.172 K, our calculated value is well in accord with the experimental data. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：232 / 233
页数：2
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