Two- T c and three- T c behavior of the Kondo superconductor ( La, Y)Ce
作者： R. Dreyer , T. Krug , K. Winzer
DOI: 10.1007/BF00681721
关键词:
摘要: The dependence of the superconducting transition temperatureTc on Ce impurity concentration is reported for (La, Y)Ce system. Susceptibility and resistivity measurements down to 8 mK show three temperatures nearly critical concentrations in alloys with 15–22.5 at %Y, while 25 %Y only two are observed. finite tail superconducting-normal phase boundary, which responsible third transition, occurs small values ofTK/Tc0 vanishes larger values, contradiction recent theoretical predictions pair-breaking Kondo superconductors.
harvard.edu
springer.com
sci-hub.se 参考文章(21)
K. Winzer, Die elektrischen Eigenschaften des Kondo-Supraleiters ( La , Ce)Al 2 European Physical Journal A. ,vol. 265, pp. 139- 164 ,(1973) , 10.1007/BF01394653
J.G. Huber, W.A. Fertig, M.B. Maple, Superconducting-normal phase boundaries of (La,Th)Ce systems Solid State Communications. ,vol. 15, pp. 453- 457 ,(1974) , 10.1016/0038-1098(74)91119-3
G. Riblet, K. Winzer, Vanishing of superconductivity below a second transition temperature in (La1-xCex) Al2 alloys due to the kondo effect Solid State Communications. ,vol. 9, pp. 1663- 1665 ,(1971) , 10.1016/0038-1098(71)90336-X
Jun Takeuchi, Yoshika Masuda, Magnetic Impurities in Superconductors; La(Ce)Sn3-xPbx and La1-yYy(Ce) Systems Journal of the Physical Society of Japan. ,vol. 44, pp. 402- 409 ,(1978) , 10.1143/JPSJ.44.402
E. Umlauf, J. Schneider, R. Meier, H. Kreuzer, Pair-breaking effects in the superconducting Kondo alloy LaCe Journal of Low Temperature Physics. ,vol. 5, pp. 191- 195 ,(1971) , 10.1007/BF00629572
Takeo Satoh, Taiichiro Ohtsuka, The Specific Heat and Superconductivity of La-Y Alloys Journal of the Physical Society of Japan. ,vol. 23, pp. 9- 18 ,(1967) , 10.1143/JPSJ.23.9
E. Müller-Hartmann, J. Zittartz, Kondo effect in superconductors Physical Review Letters. ,vol. 26, pp. 428- 432 ,(1971) , 10.1103/PHYSREVLETT.26.428
K. Winzer, Evidence for a three Tc behavior of the Kondo superconductor (La, Y)Ce Solid State Communications. ,vol. 24, pp. 551- 556 ,(1977) , 10.1016/0038-1098(77)90161-2
J. Ruvalds, Fu-sui Liu, Re-entrant superconductivity from magnetic impurity interactions Solid State Communications. ,vol. 39, pp. 497- 500 ,(1981) , 10.1016/0038-1098(81)90647-5
H.G. Böttjer, K. Winzer, Intermediate-temperature superconductivity of the kondo system Ce under hydrostatic pressure Journal of Magnetism and Magnetic Materials. ,vol. 9, pp. 23- 25 ,(1978) , 10.1016/0304-8853(78)90011-2