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    Chen Wei, Ma Ruzhang. Calculation on the Energy Gap for High-TC Copper Oxide Superconductors at Normal State[J]. Chinese Journal of Engineering, 1993, 15(3): 298-304. doi: 10.13374/j.issn1001-053x.1993.03.029
    Citation: Chen Wei, Ma Ruzhang. Calculation on the Energy Gap for High-TC Copper Oxide Superconductors at Normal State[J]. Chinese Journal of Engineering, 1993, 15(3): 298-304. doi: 10.13374/j.issn1001-053x.1993.03.029

    Calculation on the Energy Gap for High-TC Copper Oxide Superconductors at Normal State

    doi: 10.13374/j.issn1001-053x.1993.03.029
    • Received Date: 1992-09-08
      Available Online: 2021-10-18
    • A approximate method for energy gap calculation of oxides is introduced in detail, and is applied for the gap culculation of high-TC copper oxide superconductors at normal state. It is revealed from the result that, most oxide superconductors at nomal state have the gap values within 8.50-8.80eV. In the same system, the variation of Cu-O layer structure results in the increase of TC upon the decrease of Eg, while in YBa2Cu3Oy, the variation of oxygen content results in the increase of TC upon the increase of Eg. Further analysis shows, the Eg values of high-TC oxides at nomal state have a close relationship with superconductivity, and the average ionization potential is the major factor in determining the Eg values.

       

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