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Mercury-based copper mixed-oxide superconductors

✍ Scribed by E.V. Antipov; S.N. Putilin; E.M. Kopnin; J.J. Capponi; C. Chaillout; S.M. Loureiro; M. Marezio; A. Santoro

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 345 KB
Volume: 235-240
Category: Article
ISSN: 0921-4534
DOI: 10.1016/0921-4534(94)91304-8

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✦ Synopsis

Syntheses, heat treatments, structures and superconducting properties of Hg-based superconducting Cu mixed oxides with the general formula HgBa2Can_lCUnO2n+2+8 are presented and discussed. The increase of the superconducting transition temperature with n occurs up to the third member. The heat-treatment induces distinct changes of T c for different members of the series. Superconductivity in Hg-1212 and Hg-1201 exists in underdoped and overdoped regions. In the structures of Hg-based superconductors the (CuO2) layers have an undistorted ideal arrangement, which could be responsible for the existence of superconductivity at temperatures around 120-135 K.

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