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Shear Flow and Kelvin-Helmholtz Instability in Superfluids

R. Blaauwgeers, V. B. Eltsov, G. Eska, A. P. Finne, R. P. Haley, M. Krusius, J. J. Ruohio, L. Skrbek, G. E. Volovik
2002 Physical Review Letters  

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2001 pre-print
arXiv:cond-mat/0111343v1 fatcat:xlvgt5d53nep7lmijppvq4zsqm
2002 accepted
arXiv:cond-mat/0111343v2 fatcat:ot7axdsg7fce3kc6dm7ufee3iq
The first realization of instabilities in the shear flow between two superfluids is examined. The interface separating the A and B phases of superfluid He-3 is magnetically stabilized. With uniform rotation we create a state with discontinuous tangential velocities at the interface, supported by the difference in quantized vorticity in the two phases. This state remains stable and nondissipative to high relative velocities, but finally undergoes an instability when an interfacial mode is
more » ... and some vortices cross the phase boundary. The measured properties of the instability are consistent with a modified Kelvin-Helmholtz theory.
doi:10.1103/physrevlett.89.155301 pmid:12365996 fatcat:bj5s7xak3feprjq45v4lvoczpa
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Citation

R. Blaauwgeers, V. B. Eltsov, G. Eska, A. P. Finne, R. P. Haley, M. Krusius, J. J. Ruohio, L. Skrbek, G. E. Volovik. "Shear Flow and Kelvin-Helmholtz Instability in Superfluids." Physical Review Letters 89.15 (2002)