Coupling to spin fluctuations from conductivity scattering rates

2000/02/29 by E. Schachinger, J. P. Carbotte, J. P. Ćarbotte · 5 citations
Chemistry · Earth and Planetary Sciences · Physics and Astronomy · #Fullerene Chemistry and Applications #High-pressure geophysics and materials #Physics of Superconductivity and Magnetism #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.62.9054

10 pages, 5 figures, Phys. Rev. B (in print)

arxiv created 2000/07/10 · openalex publication_date 2000/10/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

A recent analysis of optical conductivity data which has provided evidence for coupling of the charge carriers to the 41-meV spin resonance seen in the superconducting state of optimally doped YBa₂Cu₃O_6.95 (Y123) is extended to other systems. We find that the corresponding spin resonance is considerably broader in Tl₂Sr₂CuO_8+\ensuremathδ (Tl2201) and YBa₂Cu₄O₈ (Y124) than it is in Bi₂Sr₂CaCu₂O_8+\ensuremathδ (Bi2212) and there is no resonance in overdoped Tl2201 with T_c=23K. The effective charge-spin spectral density is temperature dependent and contains feedback effects that further stabilize superconductivity as T is reduced.

Citations

• Properties of boson-exchange superconductors

Cited by

• Fermi surface arcs and the infrared conductivity of underdoped YBa 2 Cu 3 O 6.50
• Angle-resolved photoemission spectroscopy and optical renormalizations: Phonons or spin fluctuations
• Magnetic resonance at 41 meV and charge dynamics in YBa 2 Cu 3 O 6.95
• Evidence for an incommensurate magnetic resonance inLa2−xSrxCuO4
• Reverse process of usual optical analysis of boson-exchange superconductors: impurity effects ons- andd-wave superconductors