Aa. Maksimov et al., 2-MAGNON LIGHT-SCATTERING IN YBA2CU3O6-CRYSTALS NEAR THE METAL-INSULATOR-TRANSITION(X SINGLE), Physical review. B, Condensed matter, 49(21), 1994, pp. 15385-15387
Investigations of two-magnon Raman scattering (RS) were carried out on
YBa2Cu3O6+x Single crystals with oxygen content near the metal-insula
tor transition. It was found that the chain oxygen reordering processe
s strongly influence the two-magnon RS spectrum.