| Autor: |
Vučić, Z., Gladić, J., Haas, C., De Boer, J. L., Vučić, Z., Gladić, J., Haas, C., De Boer, J. L. |
| Zdroj: |
Journal de Physique I; February 1996, Vol. 6 Issue: 2 p265-275, 11p |
| Abstrakt: |
An X-ray study of the quasi-one-dimensional charge density wave (CDW) system (NbS4)10I3as a function of temperature from room temperature down to 130 K has been performed by taking oscillation and zeroth level Weissenberg photographs. A reversible transformation of the room temperature tetragonal lattice into four symmetrically-related monoclinic domains has been observed at the Peierls transition temperature, TP≈285 K, with a continuous change of the monoclinic angle from 90° to 92.1° at 130 K. The monoclinic deformation of the tetragonal lattice, i.e. the shear-strain along the chain axis seems to be an elastic response to the long wavelength transverse modulation of the 3D-CDW order which can be qualitatively explained by taking into account the Coulomb interaction between CDWs on neighbouring chains up to the next-nearest-neighbours. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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