TY - JOUR
T1 - Superconductivity above 90 K in the square-planar compound system ABa2Cu3O6+x with A=Y, La, Nd, Sm, Eu, Gd, Ho, Er and Lu
AU - Hor, P. H.
AU - Meng, R. L.
AU - Wang, Y. Q.
AU - Gao, L.
AU - Huang, Z. J.
AU - Bechtold, J.
AU - Forster, K.
AU - Chu, C. W.
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1987
Y1 - 1987
N2 - We have found superconductivity in the 90-K range in ABa2Cu3O6+x with A=La, Nd, Sm, Eu, Gd, Ho, Er, and Lu in addition to Y. The results suggest that the unique square planar Cu atoms, each surrounded by four or six oxygen atoms, are crucial to the superconductivity of oxides in general. In particular, the high Tc in ABa2Cu3O6+x is attributed mainly to the quasi two-dimensional assembly of the CuO2-Ba-CuO2+x-Ba-CuO2 layers sandwiched between two A layers, with particular emphasis in the CuO2+x layers. Higher-Tc oxides are predicted for compounds with bigger assemblies of CuO2 layers coupled by Ba-layers.
AB - We have found superconductivity in the 90-K range in ABa2Cu3O6+x with A=La, Nd, Sm, Eu, Gd, Ho, Er, and Lu in addition to Y. The results suggest that the unique square planar Cu atoms, each surrounded by four or six oxygen atoms, are crucial to the superconductivity of oxides in general. In particular, the high Tc in ABa2Cu3O6+x is attributed mainly to the quasi two-dimensional assembly of the CuO2-Ba-CuO2+x-Ba-CuO2 layers sandwiched between two A layers, with particular emphasis in the CuO2+x layers. Higher-Tc oxides are predicted for compounds with bigger assemblies of CuO2 layers coupled by Ba-layers.
UR - http://www.scopus.com/inward/record.url?scp=0000971953&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000971953&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.58.1891
DO - 10.1103/PhysRevLett.58.1891
M3 - Article
AN - SCOPUS:0000971953
SN - 0031-9007
VL - 58
SP - 1891
EP - 1894
JO - Physical review letters
JF - Physical review letters
IS - 18
ER -