Dispersive collective charge modes in a spin 1/2 cuprate ladder

L. Wray; D. Qian; D. Hsieh; Y. Xia; T. Gog; D. Casa; H. Eisaki; M. Z. Hasan

doi:10.1016/j.physb.2007.10.302

Dispersive collective charge modes in a spin 1/2 cuprate ladder

L. Wray, D. Qian, D. Hsieh, Y. Xia, T. Gog, D. Casa, H. Eisaki, M. Z. Hasan

Research output: Contribution to journal › Article › peer-review

Abstract

We present the momentum evolution of collective charge modes in Sr₁₄Cu₂₄O₄₁ over the complete Brillouin zone using inelastic resonant X-ray scattering. The observed spectrum is found to be dispersive with periodicity corresponding to the ladder sublattice for momentum transfers along the ladder "leg" direction, and nondispersive along the "rung". Details of the spectrum, including dispersion and linewidth, fall between characteristic charge spectra of single chain quasi-1D Mott insulators and quasi-2D cuprates.

Original language	English (US)
Pages (from-to)	1456-1458
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	403
Issue number	5-9
DOIs	https://doi.org/10.1016/j.physb.2007.10.302
State	Published - Apr 1 2008

Keywords

Ladder
Low dimensional cuprate
Resonant inelastic X-ray scattering
SrCuO

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/j.physb.2007.10.302

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title = "Dispersive collective charge modes in a spin 1/2 cuprate ladder",

abstract = "We present the momentum evolution of collective charge modes in Sr14Cu24O41 over the complete Brillouin zone using inelastic resonant X-ray scattering. The observed spectrum is found to be dispersive with periodicity corresponding to the ladder sublattice for momentum transfers along the ladder {"}leg{"} direction, and nondispersive along the {"}rung{"}. Details of the spectrum, including dispersion and linewidth, fall between characteristic charge spectra of single chain quasi-1D Mott insulators and quasi-2D cuprates.",

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T1 - Dispersive collective charge modes in a spin 1/2 cuprate ladder

AU - Wray, L.

AU - Qian, D.

AU - Hsieh, D.

AU - Xia, Y.

AU - Gog, T.

AU - Casa, D.

AU - Eisaki, H.

AU - Hasan, M. Z.

PY - 2008/4/1

Y1 - 2008/4/1

N2 - We present the momentum evolution of collective charge modes in Sr14Cu24O41 over the complete Brillouin zone using inelastic resonant X-ray scattering. The observed spectrum is found to be dispersive with periodicity corresponding to the ladder sublattice for momentum transfers along the ladder "leg" direction, and nondispersive along the "rung". Details of the spectrum, including dispersion and linewidth, fall between characteristic charge spectra of single chain quasi-1D Mott insulators and quasi-2D cuprates.

AB - We present the momentum evolution of collective charge modes in Sr14Cu24O41 over the complete Brillouin zone using inelastic resonant X-ray scattering. The observed spectrum is found to be dispersive with periodicity corresponding to the ladder sublattice for momentum transfers along the ladder "leg" direction, and nondispersive along the "rung". Details of the spectrum, including dispersion and linewidth, fall between characteristic charge spectra of single chain quasi-1D Mott insulators and quasi-2D cuprates.

KW - Ladder

KW - Low dimensional cuprate

KW - Resonant inelastic X-ray scattering

KW - SrCuO

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Dispersive collective charge modes in a spin 1/2 cuprate ladder

Abstract

Keywords

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