Momentum-resolved charge excitations in high-Tc cuprates studied by resonant inelastic X-ray scattering

K. Ishii; M. Hoesch; T. Inami; K. Kuzushita; K. Ohwada; M. Tsubota; Y. Murakami; J. Mizuki; Y. Endoh; K. Tsutsui; T. Tohyama; S. Maekawa; K. Yamada; T. Masui; S. Tajima; H. Kawashima; J. Akimitsu

doi:10.1016/j.jpcs.2008.06.041

Momentum-resolved charge excitations in high-T_c cuprates studied by resonant inelastic X-ray scattering

K. Ishii, M. Hoesch, T. Inami, K. Kuzushita, K. Ohwada, M. Tsubota, Y. Murakami, J. Mizuki, Y. Endoh, K. Tsutsui, T. Tohyama, S. Maekawa, K. Yamada, T. Masui, S. Tajima, H. Kawashima, J. Akimitsu

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

3 Citations (Scopus)

Abstract

We report a Cu K-edge resonant inelastic X-ray scattering (RIXS) study of high-T_c cuprates. Momentum-resolved charge excitations in the CuO₂ plane are examined from parent Mott insulators to carrier-doped superconductors. The Mott gap excitation in undoped insulators is found to commonly show a larger dispersion along the [π, π] direction than the [π, 0] direction. On the other hand, the resonance condition displays material dependence. The Mott gap persists in carrier-doped states. Upon hole doping, the dispersion of the Mott gap excitation becomes weaker associated with the reduction of antiferromagnetic correlation and an intraband excitation appears as a continuum intensity below the gap at the same time. In the case of electron doping, the Mott gap excitation is prominent at the zone center and a dispersive intraband excitation is observed at finite momentum transfer.

Original language	English
Pages (from-to)	3118-3124
Number of pages	7
Journal	Journal of Physics and Chemistry of Solids
Volume	69
Issue number	12
DOIs	https://doi.org/10.1016/j.jpcs.2008.06.041
Publication status	Published - Dec 2008
Externally published	Yes

Keywords

A. Oxides
A. Superconductors
D. Electronic structure

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1016/j.jpcs.2008.06.041

Cite this

Ishii, K., Hoesch, M., Inami, T., Kuzushita, K., Ohwada, K., Tsubota, M., Murakami, Y., Mizuki, J., Endoh, Y., Tsutsui, K., Tohyama, T., Maekawa, S., Yamada, K., Masui, T., Tajima, S., Kawashima, H., & Akimitsu, J. (2008). Momentum-resolved charge excitations in high-T_c cuprates studied by resonant inelastic X-ray scattering. Journal of Physics and Chemistry of Solids, 69(12), 3118-3124. https://doi.org/10.1016/j.jpcs.2008.06.041

Ishii, K, Hoesch, M, Inami, T, Kuzushita, K, Ohwada, K, Tsubota, M, Murakami, Y, Mizuki, J, Endoh, Y, Tsutsui, K, Tohyama, T, Maekawa, S, Yamada, K, Masui, T, Tajima, S, Kawashima, H & Akimitsu, J 2008, 'Momentum-resolved charge excitations in high-T_c cuprates studied by resonant inelastic X-ray scattering', Journal of Physics and Chemistry of Solids, vol. 69, no. 12, pp. 3118-3124. https://doi.org/10.1016/j.jpcs.2008.06.041

@article{b71a0d2ddc0948e09b8bfed179f4d537,

title = "Momentum-resolved charge excitations in high-Tc cuprates studied by resonant inelastic X-ray scattering",

abstract = "We report a Cu K-edge resonant inelastic X-ray scattering (RIXS) study of high-Tc cuprates. Momentum-resolved charge excitations in the CuO2 plane are examined from parent Mott insulators to carrier-doped superconductors. The Mott gap excitation in undoped insulators is found to commonly show a larger dispersion along the [π, π] direction than the [π, 0] direction. On the other hand, the resonance condition displays material dependence. The Mott gap persists in carrier-doped states. Upon hole doping, the dispersion of the Mott gap excitation becomes weaker associated with the reduction of antiferromagnetic correlation and an intraband excitation appears as a continuum intensity below the gap at the same time. In the case of electron doping, the Mott gap excitation is prominent at the zone center and a dispersive intraband excitation is observed at finite momentum transfer.",

keywords = "A. Oxides, A. Superconductors, D. Electronic structure",

author = "K. Ishii and M. Hoesch and T. Inami and K. Kuzushita and K. Ohwada and M. Tsubota and Y. Murakami and J. Mizuki and Y. Endoh and K. Tsutsui and T. Tohyama and S. Maekawa and K. Yamada and T. Masui and S. Tajima and H. Kawashima and J. Akimitsu",

note = "Funding Information: The authors thank Dr. I. Jarrige for proofreading the manuscript. This work was performed under the inter-university cooperative research program of the Institute of Materials Research, Tohoku University and financially supported by the Grant-in-Aid for Scientific Research on Priority Areas “Invention of anomalous quantum materials” from the Ministry of Education, Culture, Sports, Science, and Technology of Japan. K.I. was also supported by Grant-in-Aid for Young Scientists from JSPS. The crystal growth of YBa 2 Cu 3 O 6 was supported by the New Energy and Industrial Technology Development Organization (NEDO) as the Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications.",

year = "2008",

month = dec,

doi = "10.1016/j.jpcs.2008.06.041",

language = "English",

volume = "69",

pages = "3118--3124",

journal = "Journal of Physics and Chemistry of Solids",

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T1 - Momentum-resolved charge excitations in high-Tc cuprates studied by resonant inelastic X-ray scattering

AU - Ishii, K.

AU - Hoesch, M.

AU - Inami, T.

AU - Kuzushita, K.

AU - Ohwada, K.

AU - Tsubota, M.

AU - Murakami, Y.

AU - Mizuki, J.

AU - Endoh, Y.

AU - Tsutsui, K.

AU - Tohyama, T.

AU - Maekawa, S.

AU - Yamada, K.

AU - Masui, T.

AU - Tajima, S.

AU - Kawashima, H.

AU - Akimitsu, J.

N1 - Funding Information: The authors thank Dr. I. Jarrige for proofreading the manuscript. This work was performed under the inter-university cooperative research program of the Institute of Materials Research, Tohoku University and financially supported by the Grant-in-Aid for Scientific Research on Priority Areas “Invention of anomalous quantum materials” from the Ministry of Education, Culture, Sports, Science, and Technology of Japan. K.I. was also supported by Grant-in-Aid for Young Scientists from JSPS. The crystal growth of YBa 2 Cu 3 O 6 was supported by the New Energy and Industrial Technology Development Organization (NEDO) as the Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications.

PY - 2008/12

Y1 - 2008/12

N2 - We report a Cu K-edge resonant inelastic X-ray scattering (RIXS) study of high-Tc cuprates. Momentum-resolved charge excitations in the CuO2 plane are examined from parent Mott insulators to carrier-doped superconductors. The Mott gap excitation in undoped insulators is found to commonly show a larger dispersion along the [π, π] direction than the [π, 0] direction. On the other hand, the resonance condition displays material dependence. The Mott gap persists in carrier-doped states. Upon hole doping, the dispersion of the Mott gap excitation becomes weaker associated with the reduction of antiferromagnetic correlation and an intraband excitation appears as a continuum intensity below the gap at the same time. In the case of electron doping, the Mott gap excitation is prominent at the zone center and a dispersive intraband excitation is observed at finite momentum transfer.

AB - We report a Cu K-edge resonant inelastic X-ray scattering (RIXS) study of high-Tc cuprates. Momentum-resolved charge excitations in the CuO2 plane are examined from parent Mott insulators to carrier-doped superconductors. The Mott gap excitation in undoped insulators is found to commonly show a larger dispersion along the [π, π] direction than the [π, 0] direction. On the other hand, the resonance condition displays material dependence. The Mott gap persists in carrier-doped states. Upon hole doping, the dispersion of the Mott gap excitation becomes weaker associated with the reduction of antiferromagnetic correlation and an intraband excitation appears as a continuum intensity below the gap at the same time. In the case of electron doping, the Mott gap excitation is prominent at the zone center and a dispersive intraband excitation is observed at finite momentum transfer.

KW - A. Oxides

KW - A. Superconductors

KW - D. Electronic structure

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