Latent superconductivity at parallel interfaces in a superlattice dominated by another collective quantum phase

We theoretically examine behavior of superconductivity at parallel interfaces separating the domains another dominant collective excitation, such as charge density waves or spin waves. Due to their competitive coupling in a two-component Ginzburg-Landau model, suppression order parameter interfacial planes allows for nucleation (hidden) superconducting those planes. In case, we demonstrate how number and distance between them are linked size emerging gaps system, well versatility temperature evolution possible phases. These findings bear relevance broad selection known layered materials, further design artificial (e.g., oxide) superlattices, where interplay competing parameters paves way towards otherwise unattainable states, some with enhanced critical temperature.