Ultrathin superconductors reveal a two-band duet hiding as one
Researchers studying ultra-thin NbSe2 and TaS2 have found two superconducting bands that couple strongly enough to appear as a single energy gap in measurements, explained by two-band superconductivity and interband scattering; this advances understanding of superconductivity in transition metal dichalcogenides and hints that thicker samples could host even more complex states with implications for future electronics and quantum technologies.
