Effect of Chemical Pressure on the Charge Density Wave Transition in Rare-earth Tritellurides RTe_3

Details Effect of Chemical Pressure on the Charge Density Wave Transition in Rare-earth Tritellurides RTe_3 Effect of Chemical Pressure on the Charge Density Wave Transition in Rare-earth Tritellurides RTe_3

2006-10-11

arxiv.org/abs/cond-mat/0610319v2

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages. 9 figures. Extensively expanded from previous version to include recent results

Scientific paper

The charge density wave transition is investigated in the bi-layer family of rare earth tritelluride RTe_3 compounds (R = Sm, Gd, Tb, Dy, Ho, Er, Tm) via high resolution x-ray diffraction and electrical resistivity. The transition temperature increases monotonically with increasing lattice parameter from 244(3) K for TmTe_3 to 416(3) K for SmTe_3. The heaviest members of the series, R = Dy, Ho, Er, Tm, are observed to have a second transition at a lower temperature, which marks the onset of an additional CDW with wavevector almost equal in magnitude to the first, but oriented in the perpendicular direction.

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