Strong-coupling effects in cuprate high-Tc superconductors by magneto-optical studies
Y. S. Lee, Z. Q. Li, W. J. Padilla, S. V. Dordevic, C. C. Homes, Kouji Segawa, Yoichi Ando, D. N. Basov
DOI 10.1103/PhysRevB.72.172511 · Physical Review B
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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 et al. [Nature (London) 406, 965 (2000)] revealing a characteristic depression of the magnetic resonance in H∥c 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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 62.7 | Pressure not reported | unknown |
| YBa2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 31 | Pressure not reported | unknown |
| YBa2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 60 | Pressure not reported | unknown |
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