Using vortex pair motion, we have measured the vortex diffusivity below the Kosterlitz-Thouless transition temperature (T KT) in atomically thin superfluid helium films on both argon and neon substrates. The diffusivities are on the order ofħ/m nearT KT and then fall rapidly to10 −3 ħ/m near0.1 K for argon and to0.03 ħ/m for neon. However, for the thinnest helium film on neon, the diffusivity is large and independent of temperature. At small flow velocities, dissipation due to unpaired vortices indicates a vortex lifetime on the order of seconds for a neon substrate near0.1 K.
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J. M. Kosterlitz and D. J. Thouless,J. Phys. C 6, 1181 (1973). J. M. Kosterlitz,J. Phys. C 1, 1046 (1974).
D. J. Bishop and J. D. Reppy,Phys. Rev. B 22, 5171 (1980).
V. Ambegaokar, B. I. Halperin, D. R. Nelson, and E. D. Siggia,Phys. Rev. B 21, 1806 (1980).
P. W. Adams and W. I. Glaberson,Phys. Rev. Lett. 57, 82 (1986).
D. T. Ekholm and R. B. Hallock,Phys. Rev. Lett. 42, 449 (1979).
J. S. Langer and J. D. Reppy, inProgress in Low Temperature Physics, C. J. Groter, ed. (North-Holland, Amsterdam, 1970), Vol. 6.
A. L. Buck and J. M. Mochel,Physica B+C 107, 403 (1981).
K. A. Gillis, S. Volz, and J. M. Mochel,J. Low Temp. Phys. 61, 173 (1985).
K. A. Gillis, S. M. Volz, and J. M. Mochel,Phys. Rev. B 40, 6684 (1989).
K. A. Gillis, Ph.D. thesis, University of Illinois at Urbana-Champaign (1987).
S. M. Volz, K. A. Gillis, and J. M. Mochel,Rev. Sci. Instrum. 56, 444 (1985).
J. E. Routledge, W. L. McMillan, J. M. Mochel, and T. E. Washburn,Phys. Rev. B 18, 2155 (1978).
E. S. Sabisky and C. H. Anderson,Phys. Rev. A 7, 790 (1973).
A. L. Buck, Ph.D. thesis, University of Illinois at Urbana-Champaign (1982).
W. F. Vinen,Prog. Low Temp. Phys. 3, 1 (1961).
P. J. Shirron, K. A. Gillis, and J. M. Mochel,J. Low Temp. Phys. 75, 349 (1989).
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Volz, S.M., Gillis, K.A., Shirron, P.J. et al. Measurement of vortex diffusivity and lifetime below the Kosterlitz-Thouless transition in helium films. J Low Temp Phys 78, 325–334 (1990). https://doi.org/10.1007/BF00683314
- Transition Temperature
- Flow Velocity