Ballistic propagation of thermal excitations near a vortex in superfluid 3He-B

被引：19

作者：

Barenghi, C. F. ^{[1
]}

Sergeev, Y. A. ^{[2
]}

Suramlishvili, N. ^{[1
,3
]}

机构：

[1] Newcastle Univ, Sch Math & Stat, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[2] Newcastle Univ, Sch Mech & Syst Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[3] Andronikashvili Inst Phys, GE-0177 Tbilisi, Georgia

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.77.104512

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Andreev scattering of thermal excitations is a powerful tool for studying quantized vortices and turbulence in superfluid He-3-B at very low temperatures. We write Hamilton's equations for a quasiparticle in the presence of a vortex line, determine its trajectory, and find under which conditions it is Andreev reflected. To make contact with experiments, we generalize our results to the Onsager vortex gas and find values of the intervortex spacing in agreement with less rigorous estimates.

引用

页数：8

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