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A schematic illustration of the material stack.

Revealing Buried Layers: Exploring the Metal-Substrate Interface Layer in Superconducting Films

Researchers used a multimodal approach to determine the metal-substrate interface in a superconducting qubit material.

Image of a Wigner crystal captured by a high resolution ultra-low temperature scanning tunneling microscope. The periodic sites (blue) form a triangular structure with each consisting of exactly one electron separated by 40 billionths of a meter.

Visualizing an Elusive Quantum Crystal

Discovery proves the existence of the mysterious Wigner crystal — an unusual kind of matter made entirely of electrons.

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