Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - On the approach to criticality of a vibrating, macroscopic object in superfluid 3HeB
AU - Lambert, Colin
PY - 1990/8
Y1 - 1990/8
N2 - An intuitive picture of pair breaking by a vibrating wire is developed, which makes dear how quasi-particles can escape from the wire at critical velocities the Landau critical velocity νL. Assuming strong gap suppression at the wire surface, a critical velocity of is obtained, for ideal dipole flow around a wire of circular cross-section. In addition, a further transition to enhanced quasi-particle emission is predicted to occur at a velocity More generally, for non-dipole flow, and where at αl characterizes the local superflow near the surface of the wire.
AB - An intuitive picture of pair breaking by a vibrating wire is developed, which makes dear how quasi-particles can escape from the wire at critical velocities the Landau critical velocity νL. Assuming strong gap suppression at the wire surface, a critical velocity of is obtained, for ideal dipole flow around a wire of circular cross-section. In addition, a further transition to enhanced quasi-particle emission is predicted to occur at a velocity More generally, for non-dipole flow, and where at αl characterizes the local superflow near the surface of the wire.
U2 - 10.1016/S0921-4526(90)81176-O
DO - 10.1016/S0921-4526(90)81176-O
M3 - Journal article
VL - 165-166
SP - 653
EP - 654
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 1
ER -