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...
| Main Authors: | , , , , , , , |
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| 格式: | Journal article |
| 語言: | English |
| 出版: |
2009
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