ShareSuperconductivity above 130 K in the mercury-barium-calcium-copper-oxygen (HBCCO) system.
Author(s) : SCHILLING A., CANTONI M., GUO J. D., OTT H. R.
Type of article: Article
Summary
The discovery of superconductivity below a transition temperature of 94 K of HBCCO has extended the repertoire of high-transition temperature superconductors containing copper-oxide planes embedded in suitably structured (layered) materials. Previous experience with similar compounds containing bismuth and thallium instead of mercury suggested that even higher transition temperatures might be achieved in mercure-based compounds with more than one copper-oxide layer per unit cell. The authors provide support for this conjecture, with the discovery of superconductivity above 130 K in a material containing HBCCO. Both magnetic and resistivity measurements confirm a maximum transition temperature of about 133 K, distinctly higher than the previous established record value of 125-127 K observed in TBCCO.
Details
- Original title: Superconductivity above 130 K in the mercury-barium-calcium-copper-oxygen (HBCCO) system.
- Record ID : 1994-2089
- Languages: English
- Source: Nature - vol. 363 - n. 6424
- Publication date: 1993/05/06
- Document available for consultation in the library of the IIR headquarters only.
Links
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Indexing
- Themes: Superconduction
- Keywords: Superconduction; Oxide; Copper; Calcium; Mercury; Barium; Critical temperature; Superconductor; High temperature
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