Nontrivial metallic state of MoS2

Article

关键词: DENSITY-WAVE PHASE;    LATTICE-DYNAMICS;    SUPERLATTICE FORMATION;    VALLEY POLARIZATION;    RAMAN-SCATTERING;    MONOLAYER MOS2;    TRANSITION;    SUPERCONDUCTIVITY;    DICHALCOGENIDES;    TEMPERATURE;   

DOI  :  10.1103/PhysRevB.97.214519

来源: SCIE

【 摘 要 】

The electrical conductivity and Raman spectroscopy measurements have been performed on MoS2 at high pressures up to 80 GPa and variable temperatures down to 5 K. We find that the temperature dependence of the resistance in a mixed phase has an anomaly (a hump) which shifts with pressure to higher temperature. Concomitantly, a different Raman phonon mode appears in the mixed 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 an emergence of superconductivity at higher pressures.

【 授权许可】

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