1998/08/06 by G. Els, G. S. Uhrig, Götz S. Uhrig +10 · 1 citation
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Atomic physics #Chemistry #Condensed matter physics #Dopant #Doping #Excited state #Magnetic and transport properties of perovskites and related materials #Materials science #Optics #Physics #Physics of Superconductivity and Magnetism #Polarization (electrochemistry) #Scattering #Singlet state #Spinon #cond-mat.str-el
paper · pdf · doi:10.1209/epl/i1998-00382-3
published as Europhys. Lett. 43, 463 (1998) · 4 pages, Latex with 3 figures, including EPL style files, Eur. Phys. Lett. in press
arxiv created 1998/08/06 · openalex publication_date 1998/08/15 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Polarized inelastic light scattering experiments on Cu 1 − x Zn x GeO 3 (0 ⩽ x ⩽ 0.045) single crystals show for x ≠ 0 a new distinct mode at nearly half the energy of the singlet response below the spin-Peierls transition. The temperature, magnetic field, polarization, and doping dependences of this mode are similar to those of the singlet bound state. The data are interpreted in terms of a spinon-assisted light scattering process. Position and form of the peak provide strong evidence for the presence of dopant-bound spinons in Cu 1 − x Zn x GeO 3 .