Researchers at IBM have been digging around in the Rare Earths to find a substrate better than Silicon to support superconducting integrated circuitry – Silicon is no good because the crystal lattice structure is a complete mismatch with that of the superconducting ceramics that trying to combine the two is like trying to lay vinyl tiles on a concrete floor: Lanthanum Gallate looks promising and much cheaper than Strontium Titanate, which has been tried – but Neodymium Gallate may prove even better.
IBM RESEARCHERS TRY TO FIND REPLACEMENT FOR SILICON
