Transverse sound in differentially moving superfluid helium

被引：5

作者：

Adamenko, I. N. ^{[1
]}

Nemchenko, K. E. ^{[1
]}

Slipko, V. A. ^{[1
]}

Wyatt, A. F. G. ^{[2
]}

机构：

[1] Kharkov Natl Univ, UA-61077 Kharkov, Ukraine

[2] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 14期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1103/PhysRevB.77.144515

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

There exists a transverse sound mode in superfluid helium, in addition to the first and second sound modes. In this mode, the velocity of the normal component oscillates in the direction perpendicular to the wave vector; hence, it is named the transverse mode. We analyze this mode at arbitrary values of the relative velocity of the normal and superfluid components. In general, temperature, pressure, and superfluid velocity also oscillate. The general relations between the amplitudes of the oscillating variables in the transverse mode are found in a general direction of the wave vector with respect to the relative velocity of the normal fluid and superfluid. We estimate the attenuation of the transverse mode in phonon pulses and discuss the possibility of detecting it experimentally.

引用

页数：6

共 14 条

[1] Anisotropic system of quasiparticles in superfluid helium - art. no. 065301 [J].