Magnon Broadening Effects in Double Layered Manganite La_1.2 Sr_1.8 Mn_2 O_7

Details Magnon Broadening Effects in Double Layered Manganite La_1.2 Sr_1.8 Mn_2 O_7 Magnon Broadening Effects in Double Layered Manganite La_1.2 Sr_1.8 Mn_2 O_7

1999-07-23

arxiv.org/abs/cond-mat/9907362v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages + 1 jpeg figure

Scientific paper

10.1016/S0921-4526(99)02284-X

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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