MIT physicists have discovered a scalable method for growing high-quality moiré crystals through chemical synthesis, bypassing the laborious hand-assembly process previously required. These moiré crystals exhibit a striking quantum phenomenon: electrons behave as if they move through a synthetic fourth spatial dimension, simulating four-dimensional quantum physics within a three-dimensional material. The interference between two competing crystal lattices creates a mathematical equivalence to a 4D superspace, which researchers confirmed by studying electronic and magnetic properties under high magnetic fields. This breakthrough opens experimental pathways to test long-standing theoretical predictions about higher-dimensional superconductivity and topological properties.
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