Raman scattering studies of the pressure- and doping- tuned phases of transition metal dichalcogenides
Abstract
There has been a great deal of recent interest in materials exhibiting a ``universal'' phase diagram in which charge- and/or magnetically ordered phases exist in close proximity to a superconducting phase. One example of such a phase diagram is found in low dimensional materials like the layered dichalcogenides, in which a superconducting phase evolves from a charge density wave (CDW) phase with pressure or doping. However, it is not clear whether the superconducting and CDW orders compete or coexist in these materials. In this talk, we present Raman spectroscopic studies of the CDW excitations in transition metal dichalcogenides such as pure and doped TaS2 By studying the evolution of phonons and CDW excitations in these materials with pressure and doping, we are able to investigate the manner in which the CDW phase evolves into the superconducting phase.
This work was supported by the Department of Energy, Basic Energy Sciences, Division of Material Sciences and Engineering under Award No. DE-SC0012368.- Publication:
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APS March Meeting Abstracts
- Pub Date:
- 2016
- Bibcode:
- 2016APS..MARC17006S