High-energy spin excitations in the insulating phases of high-Tc superconducting cuprates and La2NiO4

S. Sugai, M. Sato, T. Kobayashi, Jun Akimitsu, T. Ito, H. Takagi, S. Uchida, S. Hosoya, T. Kajitani, T. Fukuda

Research output: Contribution to journalArticle

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Abstract

High-energy spin excitations up to above 8000 cm-1 were measured by polarized Raman scattering in the insulating phases of S=1/2 copper oxides, La2CuO4, YBa2Cu3O6.2, Bi2Sr2Ca0.5Y0.5Cu2O8+y, Nd2CuO4, and Pr2CuO4, and an S=1 nickel oxide La2NiO4. All the copper oxides commonly show anomalous spectra, especially the secondary scattering peaks near 4J (J is the two-spin superexchange energy). Those anomalies are caused by the large four-spin cyclic exchange interactions. The present experiments demonstrated that the four-spin exchanges show distinctive characteristics in cuprates as compared to other materials.

Original languageEnglish
Pages (from-to)1045-1047
Number of pages3
JournalPhysical Review B
Volume42
Issue number1
DOIs
Publication statusPublished - 1990
Externally publishedYes

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Copper oxides
cuprates
copper oxides
Nickel oxide
Exchange interactions
excitation
Raman scattering
nickel oxides
spin exchange
Scattering
energy
Raman spectra
anomalies
Experiments
scattering
interactions
nickel monoxide
La2CuO4

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

High-energy spin excitations in the insulating phases of high-Tc superconducting cuprates and La2NiO4. / Sugai, S.; Sato, M.; Kobayashi, T.; Akimitsu, Jun; Ito, T.; Takagi, H.; Uchida, S.; Hosoya, S.; Kajitani, T.; Fukuda, T.

In: Physical Review B, Vol. 42, No. 1, 1990, p. 1045-1047.

Research output: Contribution to journalArticle

Sugai, S, Sato, M, Kobayashi, T, Akimitsu, J, Ito, T, Takagi, H, Uchida, S, Hosoya, S, Kajitani, T & Fukuda, T 1990, 'High-energy spin excitations in the insulating phases of high-Tc superconducting cuprates and La2NiO4', Physical Review B, vol. 42, no. 1, pp. 1045-1047. https://doi.org/10.1103/PhysRevB.42.1045
Sugai, S. ; Sato, M. ; Kobayashi, T. ; Akimitsu, Jun ; Ito, T. ; Takagi, H. ; Uchida, S. ; Hosoya, S. ; Kajitani, T. ; Fukuda, T. / High-energy spin excitations in the insulating phases of high-Tc superconducting cuprates and La2NiO4. In: Physical Review B. 1990 ; Vol. 42, No. 1. pp. 1045-1047.
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AU - Sugai, S.

AU - Sato, M.

AU - Kobayashi, T.

AU - Akimitsu, Jun

AU - Ito, T.

AU - Takagi, H.

AU - Uchida, S.

AU - Hosoya, S.

AU - Kajitani, T.

AU - Fukuda, T.

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