Suppression of stacking order with doping in 1T-TaS$_{2-x}$Se$_x$

Sharon S. Philip; Despina Louca; J. C. Neuefeind; Matthew B. Stone; A. I. Kolesnikov

Suppression of stacking order with doping in 1T-TaS$_{2-x}$Se$_x$

Materials Science 2023-09-26 v1 Strongly Correlated Electrons

Authors: Sharon S. Philip , Despina Louca , J. C. Neuefeind , Matthew B. Stone , A. I. Kolesnikov

Abstract

In 1T-TaS $_{2-x}$ Se $_x$ , the charge density wave (CDW) state features a star of David lattice that expands across layers as the system becomes commensurate on cooling. The layers can also order along the c-axis and different stacking orders have been proposed. Using neutron scattering on powder samples, we compared the stacking order previously observed in 1T-TaS $_2$ as the system is doped with Se. While at low temperature, a 13c layer sequence stacking was observed in TaS $_2$ , this type of ordering was not evident with doping. Doping with Se results in a nearly commensurate state with the Mott state suppressed which may be linked to the absence of the layer stacking.

Keywords

charge density wave stacking order neutron scattering 1t-tas2-xsex doping mott state

Cite

@article{arxiv.2309.13460,
  title  = {Suppression of stacking order with doping in 1T-TaS$_{2-x}$Se$_x$},
  author = {Sharon S. Philip and Despina Louca and J. C. Neuefeind and Matthew B. Stone and A. I. Kolesnikov},
  journal= {arXiv preprint arXiv:2309.13460},
  year   = {2023}
}

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5 pages, 3 figures

Suppression of stacking order with doping in 1T-TaS$_{2-x}$Se$_x$

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