Observation of a New Resonance in the Collective-Mode Spectrum of ${}^{3}{He}$ - $A$

31 January 1983

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 50 (5) , 361-364
https://doi.org/10.1103/physrevlett.50.361

Abstract

A high-resolution acoustic impedance technique has been used to investigate the collective-mode spectrum of

{}^{3}{He}

A

near

T_{c}

. A new collective mode of the order parameter has been observed. The temperature at which the new mode appears is frequency, pressure, and magnetic field independent. The observed temperature dependence is very close to the predicted behavior of the super-flapping mode in the weak-coupling limit of the Anderson-Brinkman-Morel energy gap.

Keywords

This publication has 7 references indexed in Scilit:

Resolution of New Structure in the Collective-Mode Spectrum of ${}^{3}{He}$ - $B$
Physical Review Letters, 1982
Sound Attenuation Measurements in Superfluid ${}^{3}{He}$ - $A$ Well below $T_{c}$ : An Anomalous Behavior at Low Pressure
Physical Review Letters, 1982
Pressure Dependence of the Specific-Heat Jump at the Superfluid Transition and the Effective Mass of ${}^{3}{He}$
Physical Review Letters, 1980
Order-parameter collective modes in 3He-A and their effect on nuclear magnetic resonance (NMR) and ultrasonic attenuation
Journal of Low Temperature Physics, 1979
Anisotropy of the Propagation of Sound in the $A$ Phase of Superfluid ${}^{3}{He}$
Physical Review Letters, 1975
On the superfluid density in 3He from weak coupling theory
Journal of Low Temperature Physics, 1975
Anisotropy in Superfluid ${}^{3}{He}$ and the Attenuation of Zero Sound
Physical Review Letters, 1975

Observation of a New Resonance in the Collective-Mode Spectrum ofHe3-A

Abstract

Keywords

Observation of a New Resonance in the Collective-Mode Spectrum of ${}^{3}{He}$ - $A$