Journal of Low Temperature Physics

, Volume 101, Issue 1–2, pp 293–298 | Cite as

Andreev reflection of a beam of ballistic quasiparticle excitations incident on a static B-A phase interface in superfluid3He

  • D. J. Cousins
  • M. P. Enrico
  • S. N. Fisher
  • A. M. Guénault
  • S. L. Phillipson
  • G. R. Pickett
  • N. S. Shaw
  • P. J. Y. Thibault
Contributed Talks

Abstract

We have attempted to observe the Andreev reflection of a beam of ballistic quasiparticle excitations as it impinges on a static B-A phase interface. The beam is created, and the Andreev reflected component measured, by the quasiparticle equivalent of a black-body radiator. The A-phase is stabilized at low temperature and pressure by a magnetic field which is generated by a miniature superconducting solenoid, situated next to the radiator orifice and which provides the necessary 0.34 T field in a small, localized region. Preliminary results indicate that we can observe Andreev reflection both from the high-field distorted B-phase energy gap and from the larger equatorial A-phase energy gap.

PACS numbers

67.57.Np 67.57.Fg 67.57.Hi 

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References

  1. 1.
    I. Hahn, Y.H. Tang, H.M. Bozler and C.M. Gould,Physica B 194–196 815–816 (1994).Google Scholar
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    M.P. Enrico, S.N. Fisher, A.M. Guénault, G.R. Pickett and K. Torizuka,Physica B 194–196 789–790 (1994).Google Scholar
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    M. Ashida and K. Nagai,Prog. Theor. Phys. 74 949 (1985).Google Scholar

Copyright information

© Plenum Publishing Corporation 1995

Authors and Affiliations

  • D. J. Cousins
    • 1
  • M. P. Enrico
    • 1
  • S. N. Fisher
    • 1
    • 2
  • A. M. Guénault
    • 1
  • S. L. Phillipson
    • 1
  • G. R. Pickett
    • 1
  • N. S. Shaw
    • 1
  • P. J. Y. Thibault
    • 1
  1. 1.School of Physics and ChemistryLancaster UniversityLancasterUK, European Union
  2. 2.Centre de Recherche sur les Très Basses Temperatures, CNRSGrenoble Gedex 9France, European Union

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