Chiral charge order in the superconductor 2H-TaS2
  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. 
I. Guillamon, H. Suderow, J. G. Rodrigo, S. Vieira, P. Rodiere, L.   Cario, E. Navarro-Moratalla, C. Marti-Gastaldo and E. C...
cond-mat.supr-con cond-mat.str-el