Phonon Effects on Two-Maganon Raman Spectra in Layered Cuprate Systems

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概要

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• We laave analyzed the anonaalotrs line shajces of the two-zmagnon Ram;tn spectra of trndopedhigh T. cuprates, trsing the spin wave theory in a two-dirnensional Heisenberg antiferrornagnet. Unorder to describe a shoulder peak strtrcttrre near 4J, which is primarily associated with magneticexcitations of B?. synanaetry, xve have exjclored the phonon contribution to the Rattaan spectra.Incorporating the magnon-phonon Hamiltonian due to the rnodttlated exchange interaction byphonons, we have evaltrated the txvo-uauagnon Rarnan spectral ftrnction cotming from the lowestorder rnagnon-phonon-uaaagnon scattering. It is fotrnd that the taaagtaon-phonon-naagnon scattering gives rise to a phonon-indtrced shotrlder peak near 4J besides the dominant txvo-unagnonpeak near 3J, in good agreetnent with experiments.

• 社団法人日本物理学会の論文
• 1997-02-15

著者

• Min B

  Pohang Univ. Sci. And Technol. Pohang Kor

• Min B.I.

  Depatment of Physics,Pohang University of Seience and Technology

• Lee J.D.

  Depatment of Physics,Pohang University of Seience and Technology

関連論文

• Quasi-Particle Spectral Weight in the Two-Dimensional Electron Gas
• Phonon Effects on Two-Maganon Raman Spectra in Layered Cuprate Systems

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