2 papers
cond-mat.str-el1998
Dopant-Bound Spinons in Cu_(1-x)Zn_xGeO_3
G. Els, G. S. Uhrig, P. Lemmens +7
Polarized inelastic light scattering experiments on Cu_(1-x)Zn_xGeO_3 (0<= x <= 0.045) single crystals show for x<>0 a new distinct mode at nearly half the energy of the singlet re…
cond-mat.str-el1997
Observation of three-magnon light scattering in CuGeO_3
G. Els, P. H. M. van Loosdrecht, P. Lemmens +7
Temperature and magnetic field dependent polarized Brillouin spectra of CuGeO_3 are reported. In addition to a bound singlet state at 30 cm^{-1}, a new feature has been observed at…