Definition: | oxide superconductor containing CuO2 sheets with hole-like carriers Note 1 to entry: (La,Sr)2CuO4, YBa2Cu3O7, (Bi,Pb)2Sr2Can−1CunO2n+4 (n = 1,2,3), TlmBa2Can−1CunO2(m+n) (m = 1,2, n = 1,2,3) and HgBa2Can−1CunO2n+2 (n = 1,2,3) systems are typically included.
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