Abstract
Effects of all types of impurities (nonmagnetic, magnetic, and spin-orbit) on an antiferromagnetic superconductor (AFSC) have been investigated by studying the transition temperatureT c and the specific heat jump. We have assumed a one-dimensional electron band. The impurity scattering is treated within the self-consistent Born approximation. We find that: (a) the molecular fieldH Q and the magnetic impurities depress superconductivity of AFSC and their pair-breaking effect is additive; (b) the effect of spin-orbit impurities is the same as that of nonmagnetic impurities—these enhance superconductivity by screening the molecular field; and (c) in the extreme dirty limit, the AFSC is described in terms of an effective pair-breaking parameter given by 1/τeff=1/τ2+H 2Q τ where 1/τ=1/τ1+2/3τso(1/τ1, 1/τ2, and 1/τso, respectively, are the scattering rates from nonmagnetic, magnetic and spin-orbit impurities).
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References
G. K. Shenoy, B. D. Dunlap, and F. Y. Fradin, eds.Ternary Superconductors (North Holland, Amsterdam, 1981).
M. B. Maple and Ø. Fischer, eds.Superconductivity in Ternary Compounds II (Springer, Berlin, 1982).
J. Keller,J. Magn. Magn. Mater. 28, 193 (1982).
P. Fulde and J. Keller, inSuperconductivity in Ternary Compounds II, M. B. Mapel and Ø. Fischer, eds. (Springer, Berlin, 1982), pp. 250–294.
M. Ishikawa,Contemp. Phys. 23, 443 (1982).
T. Matsubara and A. Kotani, eds.Superconductivity in Magnetic and Exotic Materials (Springer, Berlin, 1984).
K. Levin, M. J. Nass, C. Ro, and G. S. Grest, inSuperconductivity in Magnetic and Exotic Materials, T. Matsubara and A. Kotani, eds. (Springer, Berlin, 1984), pp. 104–111.
K. Machida,Appl. Phys. A 35, 193 (1984).
K. N. Shrivastava and K. P. Sinha,Phys. Reports 115, 93 (1984).
A. I. Buzdin and L. H. Bulaevskii,Sov. Phys. Usp. 29, 412 (1986).
M. Ishikawa and Ø. Fischer,Solid State Commun. 24, 747 (1977).
W. A. Fertig, D. C. Johnston, L. E. DeLong, R. W. McCallum, M. B. Maple, and B. T. Matthias,Phys. Rev. Lett. 38, 987 (1977).
M. B. Maple, H. C. Hamaker, and L. D. Woolf, inSuperconductivity in Ternary Compounds II, M. B. Mapel and O. Fischer, eds. (Springer, Berlin, 1982), pp. 99–141.
M. Ishikawa, Ø. Fischer, and J. Muller, inSuperconductivity in Ternary Compounds II, M. B. Maple and Ø. Fischer, eds. (Springer, Berlin, 1982), pp. 143–165.
S. E. Lambert, M. B. Maple, and B. D. Dunlap,Phys. Rev. B 33, 3129 (1986).
A. Thoma, H. Adrian, and A. Meinelt,J. Low. Temp. Phys. 64, 329 (1986).
F. G. Aliev, N. B. Brandt, V. V. Moschalkov, Yu. K. Gorelenko, and O. V. Petrenko,JETP Lett. 43, 182 (1986).
C. Broholm, J. K. Kjems, W. J. L. Buyers, P. Matthews, T. T. M. Palstra, A. A. Menovsky, and J. A. Mydosh,Phys. Rev. Lett. 58, 1467 (1987).
J. O. Willis, Z. Fisk, J. Thompson, S. W. Cheong, R. M. Aikin, J. L. Smith, and E. Zirngiebl,J. Magn. Magn. Mater. 67, L139 (1987).
W. Baltensperger and S. Strassler,Phys. Kondens. Materie 1, 20 (1963).
G. Zwicknagl and P. Fulde,Z. Physik B 43, 23 (1981).
J. Ashkenazi, C. G. Kuper, and A. Ron,Phys. Rev. B 28, 468 (1983); in Ref. 6, pp. 112–116.
M. J. Nass, K. Levin, and G. S. Grest,Phys. Rev. Lett. 46, 614 (1981).
J. Bardeen, L. N. Cooper, and J. R. Schrieffer,Phys. Rev. 108, 1175 (1957).
M. J. Nass, K. Levin, and G. S. Grest,Phys. Rev. B 25, 4541 (1982).
Y. Suzumura and A. D. S. Nagi,Phys. Rev. B 24, 5103 (1981);J. Low. Temp. Phys. 46, 397 (1982); Y. Suzumura, in Ref. 6 pp. 117–126.
K. Ishino and Y. Suzumura,Prog. Theor. Phys. 68, 1009 (1982).
Y. Suzumura and K. Ishino,Solid State Commun. 45, 637 (1983).
Y. Suzumura and K. Ishino,Prog. Theor. Phys. 70, 654 (1983).
Y. Okabe and A. D. S. Nagi,Phys. Rev. B 28, 6290 (1983); Y. Okabe, in Ref. 6, pp. 127–134.
C. Ro and K. Levin,Phys. Rev. B 29, 6155 (1984).
Y. Suzumura, Y. Okabe, and K. Ishino,Prog. Theor. Phys. 74, 211 (1985).
M. Prohammer and E. Schachinger,Solid State Commun. 58, 649 (1986).
H. Chi and A. D. S. Nagi,Solid State Commun. 57, 491 (1986);J. Low Temp. Phys. 67, 475 (1987).
H. Chi and A. D. S. Nagi,Solid State Commun. 65, 885 (1988).
R. Vaglio, B. Terris, J. Zasadzinski, and K. Gray,Phys. Rev. Lett. 53, 1489 (1984).
H. Chi and A. D. S. Nagi,Phys. Rev. B 38, 11259 (1988).
A. Abrikosov and L. Gor'kov,Sovt. Phys. JETP 12, 1243 (1961).
K. Maki, inSuperconductivity, R. D. Parks, ed. (Marcel Dekker, New York, 1969), Vol. II, p. 1035.
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Chi, H., Nagi, A.D.S. Thermodynamic properties of antiferromagnetic superconductors containing nonmagnetic, magnetic, and spin-orbit impurities. J Low Temp Phys 81, 199–213 (1990). https://doi.org/10.1007/BF00682682
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DOI: https://doi.org/10.1007/BF00682682