X-ray scattering studies of charge-density waves in tantalum disulfide
- 15 August 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 32 (4), 2233-2242
- https://doi.org/10.1103/physrevb.32.2233
Abstract
The temperature dependence of the wave vectors and intensities of the charge-density-wave satellites in 1T- have been investigated in detail in the noncommensurate (NC) and incommensurate (IC) phases with the use of x-ray precession photography and counter measurements. In the IC phase (T≥80°C) the intensities of first-order satellites are found to vary smoothly, and have led to the establishment of a ‘‘phason temperature factor.’’ In the NC phase, temperature-dependent domain structures have been found which prevent quantitative studies as a function of temperature. Second- and higher-order satellites are found to be, at room temperature, several orders of magnitude more intense than the values predicted by the simple sinusoidal model. It is suggested that in the NC phase several harmonics are present, which, however, disappear in the IC phase. It is found that in this phase the sinusoidal model is well applicable.
Keywords
This publication has 17 references indexed in Scilit:
- Experimental Evidence from X-Ray Diffraction for Phase Excitations in SolidsPhysical Review Letters, 1984
- Neutron scattering investigation of incommensurate ThBr4Journal of Physics C: Solid State Physics, 1983
- Effects of charge density waves on bragg peak intensitiesSolid State Communications, 1981
- Observation of excitations in the incommensurable phases of biphenyl by inelastic neutron scatteringSolid State Communications, 1980
- Neutron scattering study of the charge-density wave transitions in andPhysical Review B, 1977
- Single-crystal growth of layered crystalsIl Nuovo Cimento B (1971-1996), 1977
- Neutron-scattering study of the "one-dimensional" conductor Pt.3.2O (KCP)Physical Review B, 1975
- The role of charge density waves in structural transformations of 1T TaS2Philosophical Magazine, 1975
- Transitions between semiconducting and metallic phases in 1-T TaS2Solid State Communications, 1971
- Observability of Charge-Density Waves by Neutron DiffractionPhysical Review B, 1971