Inward dispersion of the spin excitation spectrum of stripe-ordered La2NiO4+d
Polarized- and unpolarized-neutron scattering measurements of the spin excitation spectrum in the stripe-ordered phase of La2NiO4+d (d = 0.11) are presented. At low energies, the magnetic spectral weight is found to shift anomalously towards the two-dimensional antiferromagnetic wave vector, similar...
Hlavní autoři: | Freeman, P, Hayden, S, Frost, C, Enderle, M, Yao, D, Carlson, E, Prabhakaran, D, Boothroyd, A |
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Médium: | Journal article |
Jazyk: | English |
Vydáno: |
2009
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