Universal zero-frequency Raman slope in a d-wave superconductor
W. C. Wu, J. P. Carbotte
DOI 10.1103/PhysRevB.57.R5614 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
It is known that for a superconductor of a nodal gap, the in-plane microwave conductivity saturates at low temperatures to a universal value independent of the impurity concentration. We demonstrate that a similar feature can be accessed using channel-dependent Raman scattering. For a dx2−y2-wave superconductor, the slope of low-temperature Raman intensity at zero frequency is found to be universal in the A1g and B2g channels, but not in the B1g channel. Moreover, universal Raman slopes are sensitive not only to the existence of a node, but also to different pairing states and should allow one to distinguish between such pairing states.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O6.9 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Bond-stretching phonon anomalies and charge fluctuations in copper oxide superconductors
similarity 0.96S. Cojocaru et al.
Source status unknown — claims are unverified
Resonance Raman Study of the Superconducting Gap and Low Energy Excitations in Tl2Ba2CuO6+δ Superconductors
similarity 0.95Moonsoo Kang et al.
Source status unknown — claims are unverified
Theory of the optical conductivity in the cuprate superconductors
similarity 0.95Branko P. Stojković & David Pines
Source status unknown — claims are unverified
Charge-Fluctuation Contribution to the Raman Response in Superconducting Cuprates
similarity 0.95S. Caprara et al.
Source status unknown — claims are unverified
Quasiparticle scattering from vortices in d-wave superconductors. I. Superflow contribution
similarity 0.94Manas Kulkarni et al.
Source status unknown — claims are unverified
Impurity effects on the spin excitation spectra in a d-wave superconductor
similarity 0.94Jian-Xin Li et al.
Source status unknown — claims are unverified