High-density calcium intercalation between graphene layers enhances higher temperature superconductivity

https://phys.org/news/2024-05-superconductivity-graphene-calcium-superconductors.html

"C6CaC6 prepared growing 2 layers graphene on silicon carbide substrate followed by exposure to high-density Ca atoms, leading to intercalation of Ca between layers... leads to Ca layer confinement epitaxy beneath C6CaC6 giving rise to Van Hove singularity, enhancing higher temperature superconductivity... increases critical temperatures through indirective attractive interaction between electrons and phonons, and direct attractive interaction between electrons and holes... integration, popularization of quantum computers"

Related: A high-temperature superconductor with zero resistance that exhibits strange metal behavior
https://phys.org/news/2024-06-high-temperature-superconductor-resistance-strange.html