Selected Publications
 

Propagation of thermal excitations in a cluster of vortices in superfluid 3He-B

J.J. Hosio, V.B. Eltsov, R. de Graaf, M. Krusius, J. Mäkinen, D. Schmoranzer

e describe the first measurement on Andreev scattering of thermal excitations from a vortex configuration with known density, spatial extent, and orientations in 3He-B superfluid. The heat flow from a blackbody radiator in equilibrium rotation at constant angular velocity is measured with two quartz tuning fork oscillators. One oscillator creates a controllable density of excitations at 0.2Tc base temperature and the other records the thermal response. The results are compared to numerical calculations of ballistic propagation of thermal quasiparticles through a cluster of rectilinear vortices.


Phys. Rev. B 84, 224501 (2011)

doi: 10.1103/PhysRevB.84.224501