How superconductivity and charge density waves emerge in a nickel oxide (IMAGE)
Caption
This graph shows what happens inside a nickel oxide material when scientists tweak its temperature and level of doping – replacing some atoms with others to change the number of electrons that can move around. When conditions are just right, the material’s electrons lose their individual identities and form an electron soup, and quantum states such as superconductivity (blue) and charge density waves (CDWs, in red) emerge. This new family of unconventional superconductors, also known as nickelates, was discovered at SLAC and Stanford three years ago.
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Adapted from M. Rossi et al., Nature Physics, 2022
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