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Optical probe of anisotropic and incoherent charge dynamics in a layered ferromagnet: La1.2Sr1.8Mn2O7

โœ Scribed by Ishikawa, T.; Kimura, T.; Katsufuji, T.; Tokura, Y.

Book ID
115496366
Publisher
The American Physical Society
Year
1998
Tongue
English
Weight
107 KB
Volume
57
Category
Article
ISSN
1098-0121

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Inelastic neutron-scattering measurements were performed on a single crystal of the layered colossal magnetoresistance (CMR) material La 1.2 Sr 1.8 Mn 2 O 7 (T C t 120 K). We found that the spin wave dispersion is almost perfectly two-dimensional with the in-plane spin stiffness constant D t 151 meV