Superconducting block, superconducting nanocrystal, superconducting device and a process thereof

A superconducting nanocrystal, comprising:

• at least a superconducting block, wherein the superconducting block includes
• the pair of cores with materials that are electrically conductive in their normal states;
• the shell;
• and
• the pair of cores are embedded in the shell, with an intervening centroidal distance (CD), where the embedded pair of cores and the shell are configured to be superconductive.

A superconductive device, comprising

• at least a superconducting block wherein each of the at least superconducting blocks, include a pair of cores with materials that are electrically conductive in their normal states;
• a shell with a material that is electrically conductive in its normal state;
• and the pair of cores are embedded in the shell, with an intervening centroidal distance (CD), where the embedded pair of cores and the shell are configured to be superconductive;
• and a means to extract or induce currents is connected to the at least superconducting block.

A process for the fabrication of a superconducting block, comprising steps of:

• (i) selecting a core material and a shell material, with materials that are electrically conductive in their normal states;
• (ii) forming at least a pair of cores of the core material with diameter preferably in the range of 0.3 to 2.7 nanometers;
• and
• (iii) embedding the pair of cores into the shell with intervening centroidal distance (CD) between at least the pair of cores of, wherein the intervening centroidal distance (CD) is preferably in the range of 0.7 to 20 nm, to obtain the superconducting block.