Neutron-scattering Measurements As A Test of Theories of High-temperature Superconductivity
|Title||Neutron-scattering Measurements As A Test of Theories of High-temperature Superconductivity|
|Publication Type||Journal Article|
|Year of Publication||1993|
|Authors||Bénard P, Chen L, Tremblay A-MS|
|Journal||Physical Review B|
It is shown that the Hubbard model in the intermediate-coupling regime can qualitatively explain neutron-scattering experiments in La2-xSrxCuO4 only if there are strong magnetic fluctuations in the system. By contrast, the marginal-Fermi-liquid approach explains the data without appealing at all to strong magnetic fluctuations. It is shown that the strength of the magnetic fluctuations can be estimated by detecting incommensurate peaks located near the zone center using neutron-scattering experiments.