Please use this identifier to cite or link to this item:
http://hdl.handle.net/10174/7138
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| Title: | Spin-spectral-weight distribution and energy range of the parent compound La2CuO4 |
| Authors: | Carmelo, José
Araújo, Miguel
Sampaio, Maria
White, Steve |
| Keywords: | ondas de spin
modelo de Hubbard
correlações electrónicas
susceptibilidade magnética |
| Issue Date: | 25-Jun-2012 |
| Publisher: | Europhysics Letters |
| Citation: | Europhysics Letters 98, 67004 (2012) |
| Abstract: | The spectral-weight distribution in recent neutron scattering experiments on the
parent compound La2CuO4 (LCO), which are limited in energy range to about 450meV, is studied in the framework of the Hubbard model on the square lattice. We find that the higher-energy weight extends to about 566meV and is located at and near the momentum [!, !]. Our results confirm that the U/t value suitable to LCO is in the range U/t ! (6, 8). The continuum weight energy-integrated intensity vanishes or is extremely small at momentum [!, 0]. This behavior of the intensity is consistent with that of spin waves, which are damped at [!, 0]. |
| URI: | http://hdl.handle.net/10174/7138 |
| Type: | article |
| Appears in Collections: | FIS - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
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Departamento de Física /
FIS - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica /
