Non-linear temperature dependence of Hg–O and Cu–O distances in Hg-1212 superconductor

• Published in: Physica. C, Superconductivity Vol. 340; no. 2; pp. 133 - 140
• Main Authors: Yamawaki, Kouji, Sasaki, Satoshi, Kakihana, Masato, Tanaka, Masahiko
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2000
• Subjects: Atomic distance; Hg-1212; Oxide superconductor; X-ray diffraction; 61.10.Nz; X-ray diffraction; Hg-1212; Oxide superconductor; Atomic distance; 74.72.Gr

The crystal structure of HgBa 2CaCu 2O 6+ δ (Hg-1212) has been carefully examined as a function of temperature by the single-crystal X-ray diffraction method. A significant anisotropy above the T c (=120 K) appeared on out-of-plane interatomic distances, such as Cu–O(2) and Hg–O(2), although the str...