[1] T.He, Q.Huang, A.P.Ramirez, Y.Wang, K.A.Regan, N.Rogado, M.A.Hayward, M.K.Haas, J.S.Slusky, K.Inumara, H.W.Zandbergen, N.P.Ong and R.J.Cava: Nature (London), 2001, 411, 54. [2] P.C.Canfield, P.L.Gammel and D.J.Bishop: Phys. Today, 1998, 51,(10) , 40. [3] K.Norgaard, M.R.Eskildsen, N.H.Anderson, J.Jensen, P.Hedegard, S.N.Klausen and P.C.Canfield: Phys. Rev. Lett.,2000, 84, 4982. [4] S.B.Dugdale and T.Jarlborg: Phys. Rev., 2001, B64, 100508. [5] D.J.Singh and I.I.Mazin: Phys. Rev., 2001, B64, 140507. [6] J.H.Shim, S.K.Kwon and B.I.Min: Phys. Rev., B64, 180510. [7] In Gee Kim, Jae II Lee and A. J.Free: Phys. Rev., 2002, B65,064525. [8] K.Schwarz: Phys. Rev., 1972, B5, 2466. [9] W.L.McMillan: Phys. Rev., 1968, 147, 331. [10] J.F.Janak: Phys. Rev., 1977, B16, 255. [11] M.A.Hayward, M.K.Haas, A.P.Ramirez, T.He, K.A.Regan,N.Rogado, K.Inumara and R.J.Cava: Solid State Commun.,2001, 119, 491. [12] M.Dacorogan, T.Jarlborg, A.Junod, M.Pelizzone and M.Petter: J. Low Temp. Phys., 1984, 57, 629.3 |