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There have been some people saying that LK-99 might only be superconducting in one dimension. Does anyone know how that (or even just 2-D/planar superconductiv
by floxy 3y ago
There have been some people saying that LK-99 might only be superconducting in one dimension. Does anyone know how that (or even just 2-D/planar superconductivity) would effect the levitation of samples? For the 1-D case, maybe there would be issues in creating loops in the bulk material for persistent currents to flow in? It might be hard to make a Josephson junction unless you knew the orientation of the superconductivity direction? Has anybody studied this before? My intuition breaks down here.
- ThePhysicist 3y agoThe superconducting wave function can have different symmetry, e.g. most/all low-temperature superconductors have s-wave symmetry (meaning the wave function amplitude is the same in all directions), whereas high-temperature superconductors have d-wave symmetry, which means the wave function amplitude has lobes and drops to zero along the diagonal axes. There are no p-wave superconductors to my knowledge (which I guess is meant when they talk about a 1D superconductor, i.e. the wave function has p-symmetry, but not even sure if that's what they mean). I know the main researcher has brought forward a modified BCS theory that combines insulator-metal transition physics with superconductivity, no idea though what to make of that.
- marcosdumay 3y ago> which I guess is meant when they talk about a 1D superconductor, i.e. the wave function has p-symmetry, but not even sure if that's what they mean I think they mean it only appears on islands that are much longer than they are wide or high. I.E. I understand it as a geometric limitation on the form of the crystals they can make. The theoretical stuff that got here implies it has d-wave symmetry, and so does the original paper.