Quantum diatomic chain: A supersolid structure in a three-component Bose mixture

The author theoretically studies the formation and properties of a supersolid structure in a three-component ultracold Bose gas mixture composed of ${}^{23}$Na, ${}^{39}$K, and ${}^{41}$K atoms at zero temperature. An extended linear chain structure, made by periodic repetition of the basic building block represented by a ``dimer'' unit consisting of two weakly bound quantum droplets, is identified.