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Tunneling measurements on (La1−x Ce x )Al2 single crystals with wax barriers

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Zeitschrift für Physik B Condensed Matter

Abstract

In the investigation of the Kondo superconductor (La1−x Ce x )Al2 a new technique is developed to fabricate tunnel junctions of the type: bulk sample — wax barrier — evaporated counterelectrode. Pb, Al, Ag, Au and Mg are used as counterelectrodes. Measurements employing Pb and Al yield the order parameter of nominally pure LaAl2:Δ 0=(0.47±0.03) meV=1.63kT c. The large influence of localized states within the gap is confirmed.

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References

  1. Zavaritskii, N.V.: Zh. Eksp. Teor. Fiz.48, 837 (1965); Soviet Phys. JETP21, 557 (1965)

    Google Scholar 

  2. Gärtner, K.: Dissertation, Bochum (1974)

  3. Polick, J.J.: Cryogenics14, 371 (1974)

    Google Scholar 

  4. Giaever, I.: Phys. Rev. Letters20, 1286 (1968)

    Google Scholar 

  5. Giaever, I., Zeller, H.R.: J. Vacuum Science and Technology6, 502 (1969)

    Google Scholar 

  6. Mac Vicar, M.L.A., Freake, S.M., Adkins, C.J.: J. Vacuum Science and Technology6, 717 (1969)

    Google Scholar 

  7. Keller, W.H., Nordman, J.E.: J. Appl. Phys.44, 4732 (1973)

    Google Scholar 

  8. Barone, A., Rissman, P., Russo, M.: Revue Phys. Appliquée9, 73 (1974)

    Google Scholar 

  9. Breitbarth, F.W.: Phys. Stat. Sol. (a)25, K 117 (1974)

    Google Scholar 

  10. Faraci, G., Giaquinta, G., Mancini, N.A.: Phys. Letters30 A, 400 (1969)

    Google Scholar 

  11. Burrafato, G., Faraci, G., Giaquinta, G., Mancini, N.A.: J. Phys. C: Solid State Phys.5, 2179 (1972)

    Google Scholar 

  12. Blodgett, K., Langmuir, I.: Phys. Rev.51, 964 (1937)

    Google Scholar 

  13. Miles, J.L., McMahon, H.O.: J. Appl. Phys.32, 1176 (1961)

    Google Scholar 

  14. Mann, B., Kuhn, H.: J. Appl. Phys.42, 4398 (1971)

    Google Scholar 

  15. Duke, C.B.: Tunneling in Solids, Supplement 10 to Solid State Physics, p. 72, New York-London: Academic Press 1969

    Google Scholar 

  16. Molnar, S.v., Thompson, W.A., Edelstein, A.S.: Appl. Phys. Lett.11, 163 (1967)

    Google Scholar 

  17. Thompson, W.A., Molnar, S.v.: J. Appl. Phys.41, 5218 (1970)

    Google Scholar 

  18. Tsui, D.C.: J. Appl. Phys.41, 2651 (1970)

    Google Scholar 

  19. Beuermann, G.: Verhandlungen d. Deutschen Phys. Gesellschaft1, 412 (1977)

    Google Scholar 

  20. Beuermann, G.: Z. Physik B28, 201 (1977)

    Google Scholar 

  21. Levinstein, H.J., Kunzler, J.E.: Physics Letters20, 581 (1966)

    Google Scholar 

  22. Barnes, L.J.: Phys. Rev.184, 434 (1969)

    Google Scholar 

  23. Hasselberg, L.E., Levinsen, M.T., Samuelsen, M.R.: J. Low Temp. Phys.21, 567 (1975)

    Google Scholar 

  24. Chaba, A.N., Nagi, A.D.S.: Nuovo Cimento Lett.4, 794 (1972)

    Google Scholar 

  25. McMillan, W.L., Rowell, J.M.: Superconductivity, Vol. 1, 597, edited by R.D. Parks, New York: Marcel Dekker, Inc. 1969

    Google Scholar 

  26. Giaever, I., Zeller, H.R.: Phys. Rev. B1, 4278 (1970)

    Google Scholar 

  27. Winzer, K.: Z. Physik265, 139 (1973)

    Google Scholar 

  28. Mullen, L.O., Sullivan, D.B.: J. Appl. Phys.40, 2115 (1969)

    Google Scholar 

Download references

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Authors and Affiliations

  1. I. Physikalisches Institut, Universität Göttingen, Bunsenstraße 9, D-3400, Göttingen, Federal Republic of Germany

    G. Beuermann

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  1. G. Beuermann
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Beuermann, G. Tunneling measurements on (La1−x Ce x )Al2 single crystals with wax barriers. Z Physik B 28, 207–212 (1977). https://doi.org/10.1007/BF01313043

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  • DOI: https://doi.org/10.1007/BF01313043

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