# Strong-coupling Effects in cuprate High-$T_{c}$ Superconductors by magnetooptical studies

Authors
Type
Published Article
Publication Date
Nov 23, 2005
Submission Date
Nov 23, 2005
Identifiers
DOI: 10.1103/PhysRevB.72.172511
arXiv ID: cond-mat/0511590
Source
arXiv
Signatures of strong coupling effects in cuprate high-$T_{c}$ superconductors have been authenticated through a variety of spectroscopic probes. However, the microscopic nature of relevant excitations has not been agreed upon. Here we report on magneto-optical studies of the CuO$_{2}$ plane carrier dynamics in a prototypical high-$T_{c}$ superconductor YBa$%_{2}$Cu$_{3}$O$_{y}$ (YBCO). Infrared data are directly compared with earlier inelastic neutron scattering results by Dai \textit{et al}. [Nature (London) \textbf{406}, 965 (2000)] revealing a characteristic depression of the magnetic resonance in H $\parallel$ \textit{c} field less than 7 T. This analysis has allowed us to critically assess the role of magnetic degrees of freedom in producing strong coupling effects for YBCO system.