The electrical conductivity and Raman spectroscopy measurements have been performed on MoS2 at high pressures up to 90 GPa and variable temperatures down to 5 K. We find that the temperature dependence of the resistance in a metallic 2Ha phase has an anomaly (a hump) which shifts with pressure to higher temperature. Concomitantly, a new Raman phonon mode appears in the metallic state suggesting that the electrical resistance anomaly may be related to a structural transformation. We suggest that this anomalous behavior is due to a charge density wave state, the presence of which is indicative for a possibility for an emergence of superconductivity at higher pressures.
@article{arxiv.1801.06351,
title = {Nontrivial Metallic State of Molybdenum Disulfide},
author = {Zi-Yu Cao and Jia-Wei Hu and Alexander F. Goncharov and Xiao-Jia Chen},
journal= {arXiv preprint arXiv:1801.06351},
year = {2018}
}