Agency of Industrial Science & Technology, Ministry of International Trade & Industry

Shyam Kishore Agarwal

Hideo Ihara

A Mg-doped high-temperature superconductor having low superconducting anisotropy includes a two-dimensional layered structure constituted by a charge reservoir layer and a superconducting layer, wherein some or all atoms constituting the charge reservoir layer are Cu and O atoms, metallizing or rendering the charge reservoir layer superconducting, a portion of the Ca of the Cu Ca O constituting the superconducting layer is replaced by Mg, increasing superconductive coupling between CuO layers, a thickness of the superconducting layer is increased, and therefore coherence length in a thickness direction is increased based on the uncertainty principle, lowering superconducting anisotropy.

Mg-doped high-temperature superconductor having low superconducting anisotropy and method for producing the superconductor

A Mg-doped high-temperature superconductor having low superconducting anisotropy includes a two-dimensional layered structure constituted by a charge reservoir layer and a superconducting layer, wherein some or all atoms constituting the charge reservoir layer are Cu and O atoms, metallizing or rendering the charge reservoir layer superconducting, a portion of the Ca of the Cu,Ca,O,constituting the superconducting layer is replaced by Mg, increasing superconductive coupling between CuO,layers, a thickness of the superconducting layer is increased, and therefore coherence length in a thickness direction is increased based on the uncertainty principle, lowering superconducting anisotropy.

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Shyam Kishore Agarwal