Hole distribution in (Sr, Ca, Y, La) 14Cu24O41 ladder compounds studied by x-ray absorption spectroscopy

N. Nücker; M. Merz; C. A. Kuntscher; S. Gerhold; S. Schuppler; R. Neudert; M. S. Golden; J. Fink; D. Schild; S. Stadler; V. Chakarian; J. Freeland; Y. U. Idzerda; K. Conder; M. Uehara; T. Nagata; J. Goto; J. Akimitsu; N. Motoyama; H. Eisaki; S. Uchida; U. Ammerahl; A. Revcolevschi

doi:10.1103/PhysRevB.62.14384

Hole distribution in (Sr, Ca, Y, La) ₁₄Cu₂₄O₄₁ ladder compounds studied by x-ray absorption spectroscopy

N. Nücker, M. Merz, C. A. Kuntscher, S. Gerhold, S. Schuppler, R. Neudert, M. S. Golden, J. Fink, D. Schild, S. Stadler, V. Chakarian, J. Freeland, Y. U. Idzerda, K. Conder, M. Uehara, T. Nagata, J. Goto, J. Akimitsu, N. Motoyama, H. EisakiS. Uchida, U. Ammerahl, A. Revcolevschi

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

25 Citations (Scopus)

Abstract

The unoccupied electronic structure for the Sr₁₄Cu₂₄O₄₁ family of two-leg ladder compounds was investigated for different partial substitutions of Sr²⁺ by Ca²⁺, leaving the nominal hole count constant, and by Y³⁺ or La³⁺, reducing the nominal hole count from its full value of 6 per formula unit. Using polarization-dependent x-ray absorption spectroscopy on single crystals, hole states on both the chain and ladder sites could be studied. While for intermediate hole counts all holes reside on O sites of the chains, a partial hole occupation on the ladder sites in orbitals oriented along the legs is observed for the fully doped compound Sr₁₄Cu₂₄O₄₁. On substitution of-Ca for Sr orbitals within the ladder planes but perpendicular to the legs receive some hole occupation as well.

Original language	English
Pages (from-to)	14384-14392
Number of pages	9
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	62
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.62.14384
Publication status	Published - Dec 1 2000
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.62.14384

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Nücker, N., Merz, M., Kuntscher, C. A., Gerhold, S., Schuppler, S., Neudert, R., Golden, M. S., Fink, J., Schild, D., Stadler, S., Chakarian, V., Freeland, J., Idzerda, Y. U., Conder, K., Uehara, M., Nagata, T., Goto, J., Akimitsu, J., Motoyama, N., ... Revcolevschi, A. (2000). Hole distribution in (Sr, Ca, Y, La) ₁₄Cu₂₄O₄₁ ladder compounds studied by x-ray absorption spectroscopy. Physical Review B - Condensed Matter and Materials Physics, 62(21), 14384-14392. https://doi.org/10.1103/PhysRevB.62.14384

Nücker, N, Merz, M, Kuntscher, CA, Gerhold, S, Schuppler, S, Neudert, R, Golden, MS, Fink, J, Schild, D, Stadler, S, Chakarian, V, Freeland, J, Idzerda, YU, Conder, K, Uehara, M, Nagata, T, Goto, J, Akimitsu, J, Motoyama, N, Eisaki, H, Uchida, S, Ammerahl, U & Revcolevschi, A 2000, 'Hole distribution in (Sr, Ca, Y, La) ₁₄Cu₂₄O₄₁ ladder compounds studied by x-ray absorption spectroscopy', Physical Review B - Condensed Matter and Materials Physics, vol. 62, no. 21, pp. 14384-14392. https://doi.org/10.1103/PhysRevB.62.14384

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title = "Hole distribution in (Sr, Ca, Y, La) 14Cu24O41 ladder compounds studied by x-ray absorption spectroscopy",

abstract = "The unoccupied electronic structure for the Sr14Cu24O41 family of two-leg ladder compounds was investigated for different partial substitutions of Sr2+ by Ca2+, leaving the nominal hole count constant, and by Y3+ or La3+, reducing the nominal hole count from its full value of 6 per formula unit. Using polarization-dependent x-ray absorption spectroscopy on single crystals, hole states on both the chain and ladder sites could be studied. While for intermediate hole counts all holes reside on O sites of the chains, a partial hole occupation on the ladder sites in orbitals oriented along the legs is observed for the fully doped compound Sr14Cu24O41. On substitution of-Ca for Sr orbitals within the ladder planes but perpendicular to the legs receive some hole occupation as well.",

author = "N. N{\"u}cker and M. Merz and Kuntscher, {C. A.} and S. Gerhold and S. Schuppler and R. Neudert and Golden, {M. S.} and J. Fink and D. Schild and S. Stadler and V. Chakarian and J. Freeland and Idzerda, {Y. U.} and K. Conder and M. Uehara and T. Nagata and J. Goto and J. Akimitsu and N. Motoyama and H. Eisaki and S. Uchida and U. Ammerahl and A. Revcolevschi",

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doi = "10.1103/PhysRevB.62.14384",

language = "English",

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T1 - Hole distribution in (Sr, Ca, Y, La) 14Cu24O41 ladder compounds studied by x-ray absorption spectroscopy

AU - Nücker, N.

AU - Merz, M.

AU - Kuntscher, C. A.

AU - Gerhold, S.

AU - Schuppler, S.

AU - Neudert, R.

AU - Golden, M. S.

AU - Fink, J.

AU - Schild, D.

AU - Stadler, S.

AU - Chakarian, V.

AU - Freeland, J.

AU - Idzerda, Y. U.

AU - Conder, K.

AU - Uehara, M.

AU - Nagata, T.

AU - Goto, J.

AU - Akimitsu, J.

AU - Motoyama, N.

AU - Eisaki, H.

AU - Uchida, S.

AU - Ammerahl, U.

AU - Revcolevschi, A.

PY - 2000/12/1

Y1 - 2000/12/1

N2 - The unoccupied electronic structure for the Sr14Cu24O41 family of two-leg ladder compounds was investigated for different partial substitutions of Sr2+ by Ca2+, leaving the nominal hole count constant, and by Y3+ or La3+, reducing the nominal hole count from its full value of 6 per formula unit. Using polarization-dependent x-ray absorption spectroscopy on single crystals, hole states on both the chain and ladder sites could be studied. While for intermediate hole counts all holes reside on O sites of the chains, a partial hole occupation on the ladder sites in orbitals oriented along the legs is observed for the fully doped compound Sr14Cu24O41. On substitution of-Ca for Sr orbitals within the ladder planes but perpendicular to the legs receive some hole occupation as well.

AB - The unoccupied electronic structure for the Sr14Cu24O41 family of two-leg ladder compounds was investigated for different partial substitutions of Sr2+ by Ca2+, leaving the nominal hole count constant, and by Y3+ or La3+, reducing the nominal hole count from its full value of 6 per formula unit. Using polarization-dependent x-ray absorption spectroscopy on single crystals, hole states on both the chain and ladder sites could be studied. While for intermediate hole counts all holes reside on O sites of the chains, a partial hole occupation on the ladder sites in orbitals oriented along the legs is observed for the fully doped compound Sr14Cu24O41. On substitution of-Ca for Sr orbitals within the ladder planes but perpendicular to the legs receive some hole occupation as well.

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Hole distribution in (Sr, Ca, Y, La) ₁₄Cu₂₄O₄₁ ladder compounds studied by x-ray absorption spectroscopy

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