论文部分内容阅读
La-Ba-Cu-O和YBa_2Cu_3O_(～7)(YBCO)等超导体被发现后,已经提出多种模型来解释高温超导机理。其中一种认为这些超导体中存在Cu~(3+)3/Cu~(2+)混合价态,由于无 Jahn-Teller 效应的 Cu~(3+)3离子和有 Jahn-Teller 效应的 Cu~(2+)
After the discovery of superconductors such as La-Ba-Cu-O and YBa 2 Cu 3 O 7 (YBCO), various models have been proposed to explain the HTS mechanism. One of them considers that the Cu 3+ 3 / Cu 2+ mixed valence states exist in these superconductors. Due to the Cu ~ (3 +) 3 ions without Jahn-Teller effect and Cu ~ (2+)