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Title | Strong-coupling effects in cuprate high-Tc superconductors by magneto-optical studies |
Publication Type | Journal Article |
Year of Publication | 2005 |
Authors | YS Lee, ZQ Li, WJ Padilla, SV Dordevic, CC Homes, K Segawa, Y Ando, and DN Basov |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 72 |
Issue | 17 |
Date Published | 11/2005 |
Abstract | Signatures of strong coupling effects in cuprate high-Tc 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 CuO2 plane carrier dynamics in a prototypical high-Tc superconductor YBa2Cu3Oy (YBCO). Infrared data are directly compared with earlier inelastic neutron scattering results by Dai [Nature (London) 406, 965 (2000)] revealing a characteristic depression of the magnetic resonance in Hc field less than 7T. This analysis has allowed us to critically assess the role of magnetic degrees of freedom in producing strong-coupling effects for YBCO system. © 2005 The American Physical Society. |
DOI | 10.1103/PhysRevB.72.172511 |
Short Title | Physical Review B - Condensed Matter and Materials Physics |