Research on superconductivity in certain materials, including La3Ni2O7, has yielded various findings, with some studies suggesting that superconductivity can be protected from oxygen vacancies in bilayer nickelates. Other studies have explored the impact of pressure and interatomic distances on superconductivity in different materials, including cuprates and nickelates. The mechanisms underlying high-temperature superconductivity in these materials remain a subject of investigation, with some research indicating that a phonon mechanism may be unlikely.