1975/02/01 by C. B. Scruby, P. M. Williams, Philip M. Williams +2 · 2 citations
Materials Science · #Electronic and Structural Properties of Oxides #Iron-based superconductors research #Organic and Molecular Conductors Research
paper · doi:10.1080/14786437508228930
crossref issued 1975/02/01 · crossref published 1975/02/01 · crossref published-print 1975/02/01 · openalex publication_date 1975/02/01 · crossref created 2007/07/08 · crossref deposited 2016/12/16 · openalex created_date 2025/10/10 · crossref indexed 2026/07/28 · openalex updated_date 2026/07/29
Electron and X-ray diffraction studies have identified three metastable phases in 1T TaS2. Extra reflexions are interpreted as arising from charge density waves coupled to periodic distortions modulating a trigonal lattice. These waves are incommensurate with the matrix in 1T1 and 1T2, but form a commensurate super-lattice in 1T3. Within 1T2, the temperature dependence of the wave vector is correlated with a change in the cross-section of the Fermi surface, while the diffuse scattering which accompanies the discrete reflexions in 1T1 is discussed as an image of this surface in the phonon spectrum. Changes in the stacking of distortions and in their amplitude are also reported.