Flow of He II due to an Oscillating Grid in the Low Temperature Limit

Details Flow of He II due to an Oscillating Grid in the Low Temperature Limit Flow of He II due to an Oscillating Grid in the Low Temperature Limit

2003-09-10

arxiv.org/abs/cond-mat/0309245v2

Physics

Condensed Matter

Statistical Mechanics

4 pages, 3 figures; added 1 figure and 2 references, revised, rewrote conclusions

Scientific paper

10.1103/PhysRevLett.92.244501

The macroscopic flow properties of pure He II are probed in the limit of zero temperature using an oscillating grid. With increasing oscillation amplitude the initially pure superflow changes abruptly: the resonant frequency decreases and the response becomes strongly nonlinear, attributable to the growth of a boundary layer of quantized vortices that increases the effective mass of the grid. On further increase of oscillation amplitude, the flow undergoes a transition to turbulence.

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