The nuclear spin-lattice relaxation rate R s in a Kondo superconductor has been calculated numerically in the framework of the Müller-Hartmann-Zittartz depairing theory. The calculations have been performed in the case of the usual Korringa mechanism for certain concentrations of magnetic impurities and some typical values of T K/T c0, where T K is the Kondo temperature and T c0 is the superconducting transition temperature in the absence of magnetic impurities. The temperature variation of R s shows very interesting behavior for values of T K/T c0corresponding to the reentrance behavior of superconductivity. Results are compared with the experimental data on the La(Ce)Al2 system obtained by MacLaughlin, Alloul, and Daugherty. Other possible relaxation mechanisms in the La(Gd, Ce)Al2 systems are also discussed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A. A. Abrikosov and L. P. Gor'kov, Sov. Phys.—JETP 12, 1243 (1961).
M. B. Maple, in Magnetism, H. Suhl, ed. (Academic Press, New York, 1973), Vol. V, p. 289.
H. Shiba, Prog. Theor. Phys. (Kyoto) 50, 50 (1973); Erratum 50, 1776 (1973).
K. Machida, Prog. Theor. Phys. (Kyoto) 54, 1251 (1975).
K. Machida and A. Nakanishi, Prog. Theor. Phys. (Kyoto) 55, 1 (1976).
E. Müller-Hartmann and J. Zittartz, Phys. Rev. Lett. 26, 428 (1971).
K. Matsui and Y. Masuda, J. Phys. Soc. Japan 43, 437 (1977).
T. Matsuura, S. Ichinose, and Y. Nagaoka, Prog. Theor. Phys. (Kyoto) 57, 713 (1977).
D. E. MacLaughlin, H. Alloul, and M. Daugherty, Solid State Comm. 18, 901 (1976).
D. E. MacLaughlin, J. Low Temp. Phys. 26, 111 (1977).
H. Shiba, Prog. Theor. Phys. (Kyoto) 40, 435 (1968).
J. Zittartz, A. Bringer, and E. Müller-Hartmann, Solid State Comm. 10, 513 (1972).
K. Maki, in Superconductivity, R. D. Parks, ed. (Marcel Dekker, New York, 1969), Vol. 2, Chapter 18, p. 1035.
S. C. Lo and A. D. Singh Nagi, Phys. Rev. B 9, 2090 (1974).
A. Griffin and V. Ambegaokar, in Proc. 9th Int. Conf. Low Temp. Phys., J. G. Daunt, D. O. Edwards, F. J. Milford, and M. Yaqub, eds. (Plenum Press, New York, 1965), Part A, p. 524.
K. Matsui and Y. Masuda, J. Phys. Soc. Japan 43, 1169 (1977).
D. E. MacLaughlin, M. Daugherty, and K. Parvin, Solid State Comm. 12, 5 (1972).
M. R. McHenry, B. G. Silbernagel, and J. H. Wernick, Phys. Rev. B 5, 2958 (1972).
M. R. McHenry, B. G. Silbernagel, and J. H. Wernick, AIP Conf. Proc. 5(2), 1493 (1971).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Matsoi, K., Masuda, Y. Nuclear spin-lattice relaxation in a Kondo superconductor. J Low Temp Phys 31, 101–118 (1978). https://doi.org/10.1007/BF00116232
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00116232