X-ray diffraction study of the CDW phase in (TaSe4)2I: Determination of the CDW modulation amplitude |
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| Authors: | K-B Lee D Davidov AJ Heeger |
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| Institution: | Institute for Polymers and Organic Solids, Department of Physics, University of California, Santa Barbara, CA 93106, USA |
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| Abstract: | An extensive X-ray diffraction study of charge density wave (CDW) phase in (TaSe4)2I is reported. We have observed the superstructure satellites at 2q in addition to those at q reported by Fujishita et al. The results imply a sinusoidal lattice modulation with polarization almost perpendicular to q (i.e. transverse) and the existence of CDW domains. At 15 K we have extracted an approximate value for the amplitude of the lattice modulation perpendicular to q to be μ⊥ ∽ 0.087 Å. |
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