Chiral charge order in the superconductor 2H-TaS2

C. Marti-Gastaldo; E. Coronado; E. Navarro-Moratalla; H. Suderow; I. Guillamon; J. G. Rodrigo; L. Cario; P. Rodiere; S. Vieira

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Chiral charge order in the superconductor 2H-TaS2

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arxiv 1107.3571 v1 pith:VLZ7RTSP submitted 2011-07-18 cond-mat.supr-con cond-mat.str-el

Chiral charge order in the superconductor 2H-TaS2

I. Guillamon , H. Suderow , J. G. Rodrigo , S. Vieira , P. Rodiere , L. Cario , E. Navarro-Moratalla , C. Marti-Gastaldo

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E. Coronado

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classification cond-mat.supr-con cond-mat.str-el

keywords chargechiraldensityh-tas2orderspectroscopysuperconductingsuperconductor

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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.

Chiral charge order in the superconductor 2H-TaS2

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