Magnon and phonon Raman scattering in Pr2CuO4

S. Sugai; T. Kobayashi; J. Akimitsu

doi:10.1016/0038-1098(90)90683-3

Magnon and phonon Raman scattering in Pr₂CuO₄

S. Sugai, T. Kobayashi, J. Akimitsu

Research output: Contribution to journal › Article

12 Citations (Scopus)

Abstract

The spin excitations and the lattice vibrations in the insulator phase of the electronic superconductor Pr₂CuO₄ were investigated by wide-range Raman spectroscopy. The origin of the anomalous magnon spectra as in the case of the hole superconducting cuprates are assigned to the four-spin cyclic exchange interactions. The obtained two-spin superexchange integral J is 1040 cm^-1. The phonon energies are 233 cm^-1 in A_lg, 287 cm^-1 in B_lg, and 165 and 474 cm^-1 in E_g.

Original language	English
Pages (from-to)	599-601
Number of pages	3
Journal	Solid State Communications
Volume	74
Issue number	7
DOIs	https://doi.org/10.1016/0038-1098(90)90683-3
Publication status	Published - May 1990
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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10.1016/0038-1098(90)90683-3

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Sugai, S., Kobayashi, T., & Akimitsu, J. (1990). Magnon and phonon Raman scattering in Pr₂CuO₄. Solid State Communications, 74(7), 599-601. https://doi.org/10.1016/0038-1098(90)90683-3

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AB - The spin excitations and the lattice vibrations in the insulator phase of the electronic superconductor Pr2CuO4 were investigated by wide-range Raman spectroscopy. The origin of the anomalous magnon spectra as in the case of the hole superconducting cuprates are assigned to the four-spin cyclic exchange interactions. The obtained two-spin superexchange integral J is 1040 cm-1. The phonon energies are 233 cm-1 in Alg, 287 cm-1 in Blg, and 165 and 474 cm-1 in Eg.

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