Physics – Condensed Matter – Superconductivity
Scientific paper
2011-07-18
Physics
Condensed Matter
Superconductivity
Scientific paper
We find chiral charge order in the superconductor 2H-TaS2 using Scanning Tunneling Microscopy and Spectroscopy (STM/S) at 0.1 K. Topographic images show hexagonal atomic lattice and charge density wave (CDW) with clockwise and counterclockwise charge modulations. Tunneling spectroscopy reveals the superconducting density of states, disappearing at Tc = 1.75 K and showing a wide distribution of values of the superconducting gap, centered around \Delta=0.28 meV.
Cario Laurent
Coronado Eugenio
Guillamon I.
Marti-Gastaldo C.
Navarro-Moratalla E.
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