Dv. Fil et Al. Zazunov, BRILLOUIN LIGHT-SCATTERING, X-RAY-DIFFRACTION AND NEUTRON-SCATTERING SPECTROSCOPY OF COLLECTIVE SOUND LIKE PLANE MODE IN HTSC CUPRATES, Physica. C, Superconductivity, 282, 1997, pp. 1045-1046
Theory of Brillouin light scattering, neutron scattering and X-ray dif
fusive diffraction by acoustic modes in cuprates Nd2CuO4 and Pr2CuO4 i
s considered. The effect of the additional soundlike collective mode,
observed experimentally by acoustic methods [1,2], is discussed.