Phonon-induced magnon raman scattering in high Tc cuprates

J. D. Lee; B. I. Min

doi:10.1016/0038-1098(96)00175-5

Phonon-induced magnon raman scattering in high T_c cuprates

J. D. Lee
, B. I. Min

Department of Physics and Chemistry

Pohang University of Science and Technology

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

4 Scopus citations

Abstract

The anomalous line shapes of the Raman spectra of undoped high T_c cuprates are analyzed. In order to describe peak structures near 3J and 4J in the two-magnon B_1g Raman spectra, the phonon contribution to the Raman spectra are explored based on the spin wave theory in a two-dimensional Heisenberg antiferromagnet. We have derived the magnon - phonon Hamiltonian from the modulated exchange interaction by the lattice vibrations, and evaluated the Raman spectral function due to the lowest order magnon-phonon-magnon scattering. It is found that the magnon-phonon-magnon scattering gives rise to a phonon-induced magnon peak near 4J, in good agreement with experiments.

Original language	English
Pages (from-to)	627-631
Number of pages	5
Journal	Solid State Communications
Volume	99
Issue number	9
DOIs	https://doi.org/10.1016/0038-1098(96)00175-5
State	Published - Sep 1996

Bibliographical note

Funding Information:
Acknowledgements - We are very grateful to J.H. Kim for providing us with a motivation for this work. This work was supportedb y the POSTECH-BSRI programo f the Korean Ministry of Education (BSRI-95-2438)a, nd also in part by theK orea Science EngineeringF oundation through the SRC program of SNU-CTP.

Keywords

A. high-T superconductors
A. magnetically ordered materials
D. phonons
D. spin dynamics

Access to Document

10.1016/0038-1098(96)00175-5

Cite this

@article{146b4ea7f61048088070b5a8d1a8b7ed,

title = "Phonon-induced magnon raman scattering in high Tc cuprates",

abstract = "The anomalous line shapes of the Raman spectra of undoped high Tc cuprates are analyzed. In order to describe peak structures near 3J and 4J in the two-magnon B1g Raman spectra, the phonon contribution to the Raman spectra are explored based on the spin wave theory in a two-dimensional Heisenberg antiferromagnet. We have derived the magnon - phonon Hamiltonian from the modulated exchange interaction by the lattice vibrations, and evaluated the Raman spectral function due to the lowest order magnon-phonon-magnon scattering. It is found that the magnon-phonon-magnon scattering gives rise to a phonon-induced magnon peak near 4J, in good agreement with experiments.",

keywords = "A. high-T superconductors, A. magnetically ordered materials, D. phonons, D. spin dynamics",

author = "Lee, \{J. D.\} and Min, \{B. I.\}",

note = "Funding Information: Acknowledgements - We are very grateful to J.H. Kim for providing us with a motivation for this work. This work was supportedb y the POSTECH-BSRI programo f the Korean Ministry of Education (BSRI-95-2438)a, nd also in part by theK orea Science EngineeringF oundation through the SRC program of SNU-CTP.",

year = "1996",

month = sep,

doi = "10.1016/0038-1098(96)00175-5",

language = "English",

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journal = "Solid State Communications",

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T1 - Phonon-induced magnon raman scattering in high Tc cuprates

AU - Lee, J. D.

AU - Min, B. I.

N1 - Funding Information: Acknowledgements - We are very grateful to J.H. Kim for providing us with a motivation for this work. This work was supportedb y the POSTECH-BSRI programo f the Korean Ministry of Education (BSRI-95-2438)a, nd also in part by theK orea Science EngineeringF oundation through the SRC program of SNU-CTP.

PY - 1996/9

Y1 - 1996/9

N2 - The anomalous line shapes of the Raman spectra of undoped high Tc cuprates are analyzed. In order to describe peak structures near 3J and 4J in the two-magnon B1g Raman spectra, the phonon contribution to the Raman spectra are explored based on the spin wave theory in a two-dimensional Heisenberg antiferromagnet. We have derived the magnon - phonon Hamiltonian from the modulated exchange interaction by the lattice vibrations, and evaluated the Raman spectral function due to the lowest order magnon-phonon-magnon scattering. It is found that the magnon-phonon-magnon scattering gives rise to a phonon-induced magnon peak near 4J, in good agreement with experiments.

AB - The anomalous line shapes of the Raman spectra of undoped high Tc cuprates are analyzed. In order to describe peak structures near 3J and 4J in the two-magnon B1g Raman spectra, the phonon contribution to the Raman spectra are explored based on the spin wave theory in a two-dimensional Heisenberg antiferromagnet. We have derived the magnon - phonon Hamiltonian from the modulated exchange interaction by the lattice vibrations, and evaluated the Raman spectral function due to the lowest order magnon-phonon-magnon scattering. It is found that the magnon-phonon-magnon scattering gives rise to a phonon-induced magnon peak near 4J, in good agreement with experiments.

KW - A. high-T superconductors

KW - A. magnetically ordered materials

KW - D. phonons

KW - D. spin dynamics

UR - https://www.scopus.com/pages/publications/0030242742

U2 - 10.1016/0038-1098(96)00175-5

DO - 10.1016/0038-1098(96)00175-5

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