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Journal of Low Temperature Physics

, Volume 162, Issue 5–6, pp 449–454 | Cite as

The Quest for Bose-Einstein Condensation in Solid 4He

  • S. O. Diallo
  • R. T. Azuah
  • H. R. Glyde
Article

Abstract

Ever since the seminal torsional oscillator (TO) measurements of Kim and Chan which suggested the existence of a phase transition in solid 4He, from normal to a ‘supersolid’ state below a critical temperature T c = 200 mK, there has been an unprecedented amount of excitement and research activity aimed at better understanding this phase. Despite much work, this remarkable phase has yet to be independently confirmed by conventional scattering techniques, such as neutron scattering. We have carried out a series of neutron scattering measurements, which we here review, aimed at observing Bose-Einstein condensation (BEC) in solid 4He at temperatures below T c . In bulk liquid 4He, the appearance of BEC below T λ signals the onset of superfluidity. The observation of a condensate fraction in the solid would provide an unambiguous confirmation for ‘supersolidity’. Although, our measurements have not yet revealed a non-zero condensate fraction or algebraic off diagonal long-range order n 0 in solid 4He down to 65 mK, i.e. n 0=(0±0.3)%, our search for BEC and its corollaries continues with improved instrumentation.

Keywords

BEC of excitations Supersolids Glasses and defects 

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References

  1. 1.
    E. Kim, M.H.W. Chan, Science 305, 2004 (1941) Google Scholar
  2. 2.
    E. Kim, M.H.W. Chan, Nature 427, 225 (2004) CrossRefADSGoogle Scholar
  3. 3.
    A.S.C. Rittner, J.D. Reppy, Phys. Rev. Lett. 101, 155301 (2008) CrossRefADSGoogle Scholar
  4. 4.
    Y. Aoki, J.C. Graves, H. Kojima, Phys. Rev. Lett. 99, 015301 (2007) CrossRefADSGoogle Scholar
  5. 5.
    B. Hunt, E. Pratt, V. Gadagkar, M. Yamashita, A.V. Balatsky, J.C. Davis, Science 324, 632 (2009) CrossRefADSGoogle Scholar
  6. 6.
    S. Balibar, F. Caupin, J. Phys. Condens. Matter 20, 173201 (2008) CrossRefADSGoogle Scholar
  7. 7.
    P.W. Anderson, Science 324, 631 (2009) CrossRefADSGoogle Scholar
  8. 8.
    J. Day, J. Beamish, Nature 450, 853 (2007) CrossRefADSGoogle Scholar
  9. 9.
    A.C. Clark, J.T. West, M.H.W. Chan, Phys. Rev. Lett. 99, 135302 (2007) CrossRefADSGoogle Scholar
  10. 10.
    B.K. Clark, D.M. Ceperley, Phys. Rev. Lett. 96, 105302 (2006) CrossRefADSGoogle Scholar
  11. 11.
    M. Boninsegni, N.V. Prokof’ev, B.V. Svistunov, Phys. Rev. Lett. 96, 105301 (2006) CrossRefADSGoogle Scholar
  12. 12.
    D.E. Galli, L. Reatto, Phys. Rev. Lett. 96, 165301 (2006) CrossRefADSGoogle Scholar
  13. 13.
    D.E. Galli, L. Reatto, J. Phys. Soc. Jpn. 77, 111010 (2008) CrossRefADSGoogle Scholar
  14. 14.
    C.A. Burns, N. Mulders, L. Lurio, M.H.W. Chan, A. Said, C.N. Kodituwakku, P.M. Platzman, Phys. Rev. B 78, 224305 (2008) CrossRefADSGoogle Scholar
  15. 15.
    J. Bossy, J.V. Pearce, H. Schober, H.R. Glyde, Phys. Rev. B 78, 224507 (2008) CrossRefADSGoogle Scholar
  16. 16.
    J. Bossy, T. Hansen, H.R. Glyde, Phys. Rev. B 81, 184507 (2010) CrossRefADSGoogle Scholar
  17. 17.
    J.T. West, X. Lin, Z.G. Cheng, M.H.W. Chan, Phys. Rev. Lett. 102, 185302 (2009) CrossRefADSGoogle Scholar
  18. 18.
    J.T. West, O. Syshchenko, J. Beamish, M.H.W. Chan, Nature Physics 5, 598 (2009) CrossRefADSGoogle Scholar
  19. 19.
    X. Lin, A.C. Clark, M.H.W. Chan, Nature 449, 1025 (2007) CrossRefADSGoogle Scholar
  20. 20.
    X. Lin, A.C. Clark, Z.G. Cheng, M.H.W. Chan, Phys. Rev. Lett. 102, 125302 (2009) CrossRefADSGoogle Scholar
  21. 21.
    S. Sasaki, R. Ishiguro, F. Caupin, H.J. Maris, S. Balibar, Science 313, 1098 (2006) CrossRefADSGoogle Scholar
  22. 22.
    M. Boninsegni, N. Prokofev, B. Svistunov, Phys. Rev. Lett. 96, 070601 (2006) CrossRefADSGoogle Scholar
  23. 23.
    S.O. Diallo, J.V. Pearce, R.T. Azuah, J.W. Taylor, H.R. Glyde, Phys. Rev. B 78, 024512 (2008) CrossRefADSGoogle Scholar
  24. 24.
    A. Miller, D. Pines, P. Nozieres, Phys. Rev. 127, 1452 (1962) MATHCrossRefADSGoogle Scholar
  25. 25.
    G.I. Waston, J. Phys. Condens. Matter 8, 5955 (1996) CrossRefADSGoogle Scholar
  26. 26.
    C. Andreani, D. Colognesi, J. Mayers, G. Reiter, R. Senesi, Adv. Phys. 54, 377 (2005) CrossRefADSGoogle Scholar
  27. 27.
    H.R. Glyde, Excitations in Liquid and Solid Helium (Oxford Science Publications, Oxford, 1994) Google Scholar
  28. 28.
    S.O. Diallo, J.V. Pearce, R.T. Azuah, O. Kirichek, J.W. Taylor, H.R. Glyde, Phys. Rev. Lett. 98, 205301 (2007) CrossRefADSGoogle Scholar
  29. 29.
    S.O. Diallo, R.T. Azuah, O. Kirichek, J.W. Taylor, H.R. Glyde, Phys. Rev. B 80, 060504 (2009) CrossRefADSGoogle Scholar
  30. 30.
    H.R. Glyde, R.T. Azuah, W.G. Stirling, Phys. Rev. B 62, 14337 (2000) CrossRefADSGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Spallation Neutron SourceOak Ridge National LaboratoryOak RidgeUSA
  2. 2.NIST Center for Neutron ResearchNISTGaithersburgUSA
  3. 3.Department of Materials Science and EngineeringUniversity of MarylandCollege ParkUSA
  4. 4.Department of Physics and AstronomyUniversity of DelawareNewarkUSA

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