Spin dynamical properties of the layered
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H. Fujioka; M. Kubota; K. Hirota; H. Yoshizawa; Y. Moritomo; Y. Endoh
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Article
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1999
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Elsevier Science
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English
β 136 KB
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