Charge density waves in Sr14-x Cax Cu24 O41: Electron correlations versus structural effects

K. Y. Choi; M. Grove; P. Lemmens; M. Fischer; G. Güntherodt; U. Ammerahl; B. Büchner; G. Dhalenne; A. Revcolevschi; J. Akimitsu

doi:10.1103/PhysRevB.73.104428

Charge density waves in Sr14-x Cax Cu24 O41: Electron correlations versus structural effects

K. Y. Choi, M. Grove, P. Lemmens, M. Fischer, G. Güntherodt, U. Ammerahl, B. Büchner, G. Dhalenne, A. Revcolevschi, J. Akimitsu

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8 Citations (Scopus)

Abstract

We report inelastic light scattering experiments in the spin-chain and ladder system Sr14-x Cax Cu24 O41. A depletion of an electronic background is observed for 0≤x≤5 at low temperatures and with light polarization both parallel to the leg and rung directions. This points to the formation of two-dimensional charge density wave in the ladders. Furthermore, the Ca-substitution dependence of the 305 and 249 cm-1 modes, sensitive to the lattice modulations of the respective chain and ladder system, suggests that the charge dynamics in the ladders is strongly influenced by the structural incommensurability.

Original language	English
Article number	104428
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	73
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.73.104428
Publication status	Published - 2006
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.73.104428

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Choi, K. Y., Grove, M., Lemmens, P., Fischer, M., Güntherodt, G., Ammerahl, U., Büchner, B., Dhalenne, G., Revcolevschi, A., & Akimitsu, J. (2006). Charge density waves in Sr14-x Cax Cu24 O41: Electron correlations versus structural effects. Physical Review B - Condensed Matter and Materials Physics, 73(10), Article 104428. https://doi.org/10.1103/PhysRevB.73.104428

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abstract = "We report inelastic light scattering experiments in the spin-chain and ladder system Sr14-x Cax Cu24 O41. A depletion of an electronic background is observed for 0≤x≤5 at low temperatures and with light polarization both parallel to the leg and rung directions. This points to the formation of two-dimensional charge density wave in the ladders. Furthermore, the Ca-substitution dependence of the 305 and 249 cm-1 modes, sensitive to the lattice modulations of the respective chain and ladder system, suggests that the charge dynamics in the ladders is strongly influenced by the structural incommensurability.",

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AU - Choi, K. Y.

AU - Grove, M.

AU - Lemmens, P.

AU - Fischer, M.

AU - Güntherodt, G.

AU - Ammerahl, U.

AU - Büchner, B.

AU - Dhalenne, G.

AU - Revcolevschi, A.

AU - Akimitsu, J.

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AB - We report inelastic light scattering experiments in the spin-chain and ladder system Sr14-x Cax Cu24 O41. A depletion of an electronic background is observed for 0≤x≤5 at low temperatures and with light polarization both parallel to the leg and rung directions. This points to the formation of two-dimensional charge density wave in the ladders. Furthermore, the Ca-substitution dependence of the 305 and 249 cm-1 modes, sensitive to the lattice modulations of the respective chain and ladder system, suggests that the charge dynamics in the ladders is strongly influenced by the structural incommensurability.

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Charge density waves in Sr14-x Cax Cu24 O41: Electron correlations versus structural effects

Abstract

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