The relationship between bond-valence sums and Tc in cuprate superconductors
DOI: 10.1016/0921-4534(90)90107-P
关键词:
摘要: Abstract The recently demonstrated correlation of T c with copper or oxygen bond valence sums for a wide range superconducting cuprates is shown to contradict the behaviour observed YBa 2 CU 3 O x as varied from 6 7. This conflict removed by introducing two independent variables, namely, sum and difference sums. latter measure hole density on CuO plane this increases passes through maximum (max). former indicates relative distribution these holes sites given compound. (max) correlates closely preference atoms. A general phase-diagram using parameters presented.
harvard.edu
elsevier.com
sci-hub.se 参考文章(12)
D.M. de Leeuw, W.A. Groen, L.F. Feiner, E.E. Havinga, Correlation between the superconducting transition temperature and crystal structure of high-Tc cuprate compounds Physica C: Superconductivity. ,vol. 166, pp. 133- 139 ,(1990) , 10.1016/0921-4534(90)90564-U
J. L. Tallon, R. G. Buckley, P. W. Gilberd, M. R. Presland, I. W. M. Brown, M. E. Bowden, L. A. Christian, R. Goguel, High- T c superconducting phases in the series Bi 2.1 (Ca, Sr) n+l Cu n O 2n+4+δ Nature. ,vol. 333, pp. 153- 156 ,(1988) , 10.1038/333153A0
M-H Whangbo, DB Kang, CC Torardi, None, Correlations between the superconducting transition temperatures and the in-plane copper-oxygen bond lengths in the copper-oxide superconductors Physica C: Superconductivity and its Applications. ,vol. 158, pp. 371- 376 ,(1989) , 10.1016/0921-4534(89)90230-X
R.J. Cava, A.W. Hewat, E.A. Hewat, B. Batlogg, M. Marezio, K.M. Rabe, J.J. Krajewski, W.F. Peck, L.W. Rupp, Structural anomalies, oxygen ordering and superconductivity in oxygen deficient Ba2YCu3Ox Physica C-superconductivity and Its Applications. ,vol. 165, pp. 419- 433 ,(1990) , 10.1016/0921-4534(90)90376-P
J. B. Torrance, R. M. Metzger, Role of the Madelung energy in hole conductivity in copper oxides: Difference between semiconductors and high-Tc superconductors. Physical Review Letters. ,vol. 63, pp. 1515- 1518 ,(1989) , 10.1103/PHYSREVLETT.63.1515
J. Gopalakrishnan, M.A. Subramanian, A.W. Sleight, Superconducting and nonsuperconducting analogs of Bi2Sr2CaCu2O8: The role of electronegativity Journal of Solid State Chemistry. ,vol. 80, pp. 156- 160 ,(1989) , 10.1016/0022-4596(89)90044-3
J. L. Tallon, R. G. Buckley, M. P. Staines, M. R. Presland, P. W. Gilberd, EnhancingTcin Bi2.1CaSr2Cu2O8+δfrom 90 to 101 K by yttrium substitution Applied Physics Letters. ,vol. 54, pp. 1591- 1593 ,(1989) , 10.1063/1.101389
I. D. Brown, D. Altermatt, Bond‐valence parameters obtained from a systematic analysis of the Inorganic Crystal Structure Database Acta Crystallographica Section B-structural Science. ,vol. 41, pp. 244- 247 ,(1985) , 10.1107/S0108768185002063
I.D. Brown, A determination of the oxidation states and internal stresses in Ba2YCu3Ox, x = 6 – 7 using bond valences Journal of Solid State Chemistry. ,vol. 82, pp. 122- 131 ,(1989) , 10.1016/0022-4596(89)90231-4
J. C. Fuggle, P. J. W. Weijs, R. Schoorl, G. A. Sawatzky, J. Fink, N. Nücker, P. J. Durham, W. M. Temmerman, VALENCE BANDS AND ELECTRON CORRELATION IN THE HIGH-TC SUPERCONDUCTORS Physical Review B. ,vol. 37, pp. 123- 126 ,(1988) , 10.1103/PHYSREVB.37.123