Neutron study of the temperature dependence of the dynamics and structure of the superconducting ceramic compound La2-xSrxCuO4-y
Belushkin A. V. , Goremychkin E. A. , Zaionts V. , Kadyrbaev A. R., Mikhailov B. P., Natkanets I., Sashin I. L.
The spectra of inelastic scattering and diffraction of neutrons in the compounds La2Cu04 _ y and LaL8 Sr0 2 Cu04 _ y at temperatures 290 K, 77 K, and 10 К have been studied. The spectra of inelastic scattering at 77 К and 10 К revealed the presence of a — 6-meV line, whose temperature dependence of the intensity suggests that the excitation corresponding to it is magnetic in nature.