Charge excitations in the stripe-ordered La5/3Sr1/3NiO4 and La2-x(Ba,Sr)xCuO4 superconducting compounds

S. Wakimoto; H. Kimura; K. Ishii; K. Ikeuchi; T. Adachi; M. Fujita; K. Kakurai; Y. Koike; J. Mizuki; Y. Noda; K. Yamada; A. H. Said; Yu Shvyd'Ko

doi:10.1103/PhysRevLett.102.157001

Charge excitations in the stripe-ordered La5/3Sr1/3NiO4 and La2-x(Ba,Sr)xCuO4 superconducting compounds

S. Wakimoto, H. Kimura, K. Ishii, K. Ikeuchi, T. Adachi, M. Fujita, K. Kakurai, Y. Koike, J. Mizuki, Y. Noda, K. Yamada, A. H. Said, Yu Shvyd'Ko

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

21 Citations (Scopus)

Abstract

Charge excitations in stripe-ordered 214 compounds La5/3Sr1/3NiO4 and 1/8-doped La2-x(BaorSr)xCuO4 are studied using resonant inelastic x-ray scattering in the hard x-ray regime. We observe 1eV excitation with a momentum transfer corresponding to the charge stripe spatial period both for the diagonal (nickelate) and parallel (cuprates) stripes. They are interpreted as collective stripe excitations or anomalous softening of the charge excitonic modes of the in-gap states.

Original language	English
Article number	157001
Journal	Physical review letters
Volume	102
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.102.157001
Publication status	Published - 2009 Apr 14

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.102.157001

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abstract = "Charge excitations in stripe-ordered 214 compounds La5/3Sr1/3NiO4 and 1/8-doped La2-x(BaorSr)xCuO4 are studied using resonant inelastic x-ray scattering in the hard x-ray regime. We observe 1eV excitation with a momentum transfer corresponding to the charge stripe spatial period both for the diagonal (nickelate) and parallel (cuprates) stripes. They are interpreted as collective stripe excitations or anomalous softening of the charge excitonic modes of the in-gap states.",

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T1 - Charge excitations in the stripe-ordered La5/3Sr1/3NiO4 and La2-x(Ba,Sr)xCuO4 superconducting compounds

AU - Wakimoto, S.

AU - Kimura, H.

AU - Ishii, K.

AU - Ikeuchi, K.

AU - Adachi, T.

AU - Fujita, M.

AU - Kakurai, K.

AU - Koike, Y.

AU - Mizuki, J.

AU - Noda, Y.

AU - Yamada, K.

AU - Said, A. H.

AU - Shvyd'Ko, Yu

PY - 2009/4/14

Y1 - 2009/4/14

N2 - Charge excitations in stripe-ordered 214 compounds La5/3Sr1/3NiO4 and 1/8-doped La2-x(BaorSr)xCuO4 are studied using resonant inelastic x-ray scattering in the hard x-ray regime. We observe 1eV excitation with a momentum transfer corresponding to the charge stripe spatial period both for the diagonal (nickelate) and parallel (cuprates) stripes. They are interpreted as collective stripe excitations or anomalous softening of the charge excitonic modes of the in-gap states.

AB - Charge excitations in stripe-ordered 214 compounds La5/3Sr1/3NiO4 and 1/8-doped La2-x(BaorSr)xCuO4 are studied using resonant inelastic x-ray scattering in the hard x-ray regime. We observe 1eV excitation with a momentum transfer corresponding to the charge stripe spatial period both for the diagonal (nickelate) and parallel (cuprates) stripes. They are interpreted as collective stripe excitations or anomalous softening of the charge excitonic modes of the in-gap states.

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Charge excitations in the stripe-ordered La5/3Sr1/3NiO4 and La2-x(Ba,Sr)xCuO4 superconducting compounds

Abstract

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