Two strongly coupled superconducting states can disguise themselves as a single energy gap in ultrathin materials. That understanding could eventually help researchers develop improved materials for quantum computers, ultra-efficient electronics, advanced sensors, and other superconducting technologies. A richer model solves the puzzleTraditional theories had been unable to reproduce the precise shape of the materials’ superconducting energy spectrum. This suggests that the material’s superconductivity becomes even more intricate beyond the ultrathin form. Recognizing this hidden structure could give scientists greater control when designing superconducting materials and devices.