Anisotropic Charge Modulation in Ladder Planes of Sr_14-xCa_xCu_24O_41

Abstract

The charge response of the ladders in Sr_14-xCa_xCu_24O_41 is characterized by dc resistivity, low frequency dielectric and optical spectroscopy in all three crystallographic directions. The collective charge-density wave screened mode is observed in the direction of the rungs for x=0, 3 and 6, in addition to the mode along the legs. For x=8 and 9, the charge-density-wave response along the rungs fully vanishes, while the one along the legs persists. The transport perpendicular to the planes is always dominated by hopping.

arXiv comment4 pages, 3 figures, submitted to PRB RC

References in corpus (9)

• Experiments on Ladders Reveal a Complex Interplay between a Spin-Gapped Normal State and Superconductivity
• Sliding Density-Wave in Sr_{14}Cu_{24}O_{41} Ladder Compounds
• Competing Orders in Coupled Luttinger Liquids
• Suppression of the charge-density-wave state in Sr_14Cu_24O_41 by calcium doping
• Charge-density wave formation in Sr_{14}Cu_{24}O_{41}
• Electronic Structures of Sr_{14-x}Ca_{x}Cu24O41
• Microwave and millimeter wave spectroscopy in the slightly hole-doped ladders of Sr${}_{14}$Cu${}_{24}$O${}_{41}$
• Collective density wave excitations in two-leg Sr_{14-x}Ca_xCu_{24}O_{41} ladders
• Charge-Density-Wave Formation in the Doped Two-Leg Extended Hubbard Ladder

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• Collective Excitations in the Charge-Ordered Phase of alpha-(BEDT-TTF)2I3
• Origin of charge density wave in the coupled spin ladders in Sr${}_{14-x}$Ca${}_x$Cu${}_{24}$O${}_{41}$
• Phononic gaps in the charged incommensurate planes of Sr14Cu24O41
• Orbital currents and charge density waves in a generalized Hubbard ladder
• Influence of doping on the Hall coefficient in Sr_{14-x}Ca_xCu_24O_41
• Charge density waves in Sr_14-xCa_xCu_24O_41: electron correlations vs. structural effects
• Hole-depletion of ladders in Sr${}_{14}$Cu${}_{24}$O${}_{41}$ induced by correlation effects
• Suppression of the Charge-Density-Wave State in Sr${}_{10}$Ca${}_4$Cu${}_{24}$O${}_{41}$ by External Pressure
• Effects of Ca substitution on quasi-acoustic sliding modes in Sr${}_{14-x}$Ca${}_x$Cu${}_{24}$O${}_{41}$