Onset of superfluidity in small CO2(4He)N clusters -: art. no. 153401

被引：72

作者：

Paesani, F ^{[1
]}

Kwon, Y

Whaley, KB

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Pitzer Ctr Theoret Chem, Berkeley, CA 94720 USA

[3] Konkuk Univ, Dept Phys, Seoul 143701, South Korea

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.94.153401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We provide definitive theoretical evidence for the onset of superfluidity in small helium clusters doped with molecules at less than one solvation shell, with quantitative analysis of spectroscopic constants for CO2 in He-4(N) in terms of nonclassical rotational inertia and helium superfluidity calculated by path integral methods. We find a significant superfluid response for N >= 5, with essentially unit response to rotations around the CO2 axis and partial response to rotations about an axis perpendicular to the CO2 axis for N >= 6. This anisotropic superfluid response is shown to be responsible for the N dependence of measured CO2 rotational spectra in He-4(N).

引用

页数：4