Spins and carriers in oxide superconductors studied by raman scattering

S. Sugai; M. Sato; T. Ito; T. Ido; H. Takagi; S. Uchida; T. Kobayashi; J. Akimitsu; Y. Hidaka; T. Murakami; S. Hosoya; T. Kajitani; T. Fukuda

doi:10.1016/S0921-4526(09)80217-2

Spins and carriers in oxide superconductors studied by raman scattering

S. Sugai, M. Sato, T. Ito, T. Ido, H. Takagi, S. Uchida, T. Kobayashi, J. Akimitsu, Y. Hidaka, T. Murakami, S. Hosoya, T. Kajitani, T. Fukuda

Research output: Contribution to journal › Article

5 Citations (Scopus)

Abstract

The spin and doped charge states in copper oxide superconductors were investigated by Raman spectroscopy. The anomalous magnon scattering in the antiferromagnetic insulator phases, such as the second peaks near 4J (J is the two-spin superexchange energy) in the B_1g spectra and the large scattering intensities in the A_1g spectra, suggests the existence of four-spin cyclic exchange interactions. When carriers are doped, the A_1g spectra show non-“normal Fermi liquid” behavior. The imaginary part of the experimentally obtained susceptibility have ω-proportional part from ω~0. The gradient increases, on cooling, as in the case of the marginal Fermi liquid.

Original language	English
Pages (from-to)	1263-1264
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	165-166
DOIs	https://doi.org/10.1016/S0921-4526(09)80217-2
Publication status	Published - Jan 1 1990
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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Sugai, S., Sato, M., Ito, T., Ido, T., Takagi, H., Uchida, S., Kobayashi, T., Akimitsu, J., Hidaka, Y., Murakami, T., Hosoya, S., Kajitani, T., & Fukuda, T. (1990). Spins and carriers in oxide superconductors studied by raman scattering. Physica B: Condensed Matter, 165-166, 1263-1264. https://doi.org/10.1016/S0921-4526(09)80217-2

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title = "Spins and carriers in oxide superconductors studied by raman scattering",

abstract = "The spin and doped charge states in copper oxide superconductors were investigated by Raman spectroscopy. The anomalous magnon scattering in the antiferromagnetic insulator phases, such as the second peaks near 4J (J is the two-spin superexchange energy) in the B1g spectra and the large scattering intensities in the A1g spectra, suggests the existence of four-spin cyclic exchange interactions. When carriers are doped, the A1g spectra show non-“normal Fermi liquid” behavior. The imaginary part of the experimentally obtained susceptibility have ω-proportional part from ω~0. The gradient increases, on cooling, as in the case of the marginal Fermi liquid.",

author = "S. Sugai and M. Sato and T. Ito and T. Ido and H. Takagi and S. Uchida and T. Kobayashi and J. Akimitsu and Y. Hidaka and T. Murakami and S. Hosoya and T. Kajitani and T. Fukuda",

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doi = "10.1016/S0921-4526(09)80217-2",

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T1 - Spins and carriers in oxide superconductors studied by raman scattering

AU - Sugai, S.

AU - Sato, M.

AU - Ito, T.

AU - Ido, T.

AU - Takagi, H.

AU - Uchida, S.

AU - Kobayashi, T.

AU - Akimitsu, J.

AU - Hidaka, Y.

AU - Murakami, T.

AU - Hosoya, S.

AU - Kajitani, T.

AU - Fukuda, T.

PY - 1990/1/1

Y1 - 1990/1/1

N2 - The spin and doped charge states in copper oxide superconductors were investigated by Raman spectroscopy. The anomalous magnon scattering in the antiferromagnetic insulator phases, such as the second peaks near 4J (J is the two-spin superexchange energy) in the B1g spectra and the large scattering intensities in the A1g spectra, suggests the existence of four-spin cyclic exchange interactions. When carriers are doped, the A1g spectra show non-“normal Fermi liquid” behavior. The imaginary part of the experimentally obtained susceptibility have ω-proportional part from ω~0. The gradient increases, on cooling, as in the case of the marginal Fermi liquid.

AB - The spin and doped charge states in copper oxide superconductors were investigated by Raman spectroscopy. The anomalous magnon scattering in the antiferromagnetic insulator phases, such as the second peaks near 4J (J is the two-spin superexchange energy) in the B1g spectra and the large scattering intensities in the A1g spectra, suggests the existence of four-spin cyclic exchange interactions. When carriers are doped, the A1g spectra show non-“normal Fermi liquid” behavior. The imaginary part of the experimentally obtained susceptibility have ω-proportional part from ω~0. The gradient increases, on cooling, as in the case of the marginal Fermi liquid.

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