A new leap in understanding nickel oxide superconductors

Researchers discover that nickel oxide superconductors contain a phase of quantum matter, known as charge density waves, that's common in other unconventional superconductors. In other ways, though, they're surprisingly unique. Unconventional superconductors contain a mix of weird quantum states. Researchers found one of them -- frozen electron ripples known as charge density waves -- in a nickelate superconductor they discovered three years ago.