Magnon Broadening Effects in Double Layered Manganite La₁.2 Sr₁.8 Mn₂ O₇
classification
❄️ cond-mat.str-el
cond-mat.mtrl-sci
keywords
magnonbroadeningabruptascribedboundarybrillouincouplingcubic
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Magnon linewidth of La_1.2 Sr_1.8 Mn_2 O_7 near the Brillouin zone boundary is investigated from both theoretical and experimental points of view. Abrupt magnon broadening is ascribed to a strong magnon-phonon coupling. Magnon broadening observed in cubic perovskite manganites is also discussed.
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