TY - JOUR
T1 - Acoustic order parameter mode spectroscopy in superfluid 3HeB
AU - Halperin, W. P.
PY - 1982/7
Y1 - 1982/7
N2 - Recent observations of acoustic attenuation and velocity in superfluid 3HeB have revealed two order parameter collective modes of the BW-state. The dependence of the mode frequencies on temperature, pressure and magnetic field is reviewed. Identification of the modes from data is discussed, including possible corrections to weak-coupling predictions suggested by recent theoretical work. These modes can be conveniently viewed as Cooper-pair excited states classified according to total angular momentum. Measurements of the lifetime of these states is presented with a comparison to theory.
AB - Recent observations of acoustic attenuation and velocity in superfluid 3HeB have revealed two order parameter collective modes of the BW-state. The dependence of the mode frequencies on temperature, pressure and magnetic field is reviewed. Identification of the modes from data is discussed, including possible corrections to weak-coupling predictions suggested by recent theoretical work. These modes can be conveniently viewed as Cooper-pair excited states classified according to total angular momentum. Measurements of the lifetime of these states is presented with a comparison to theory.
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U2 - 10.1016/0378-4363(82)90183-8
DO - 10.1016/0378-4363(82)90183-8
M3 - Article
AN - SCOPUS:0020152134
VL - 109-110
SP - 1596
EP - 1605
JO - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
JF - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
SN - 0378-4363
IS - C
ER -