Pair density wave (PDW) states are defined by a spatially modulating superconductive order
parameter. To search for such states in transition-metal dichalcogenides (TMDs), we used
high-speed atomic-resolution scanned Josephson-tunneling microscopy. We detected a
PDW state whose electron-pair density and energy gap modulate spatially at the wave
vectors of the preexisting charge density wave (CDW) state. The PDW couples linearly to
both the s-wave superconductor and the CDW and exhibits commensurate domains with …

Discovery of a Cooper-Pair Density Wave State in a Transition-Metal Dichalcogenide - NASA/ADS
… Discovery of a Cooper-Pair Density Wave State in a Transition-Metal Dichalcogenide …