Electronic Raman scattering in superconductors on triangular lattices
Jian-Bo Wang, Xiang-Mei He, Fei Tan, Qiang-Hua Wang
DOI 10.1103/PhysRevB.73.092510 · Physical Review B
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Abstract
We discuss the electronic Raman scattering in superconductors on triangle lattices, with possible application to the cobalt oxide superconductors. In the case of s-wave pairing the absorption is forbidden below the pair-breaking peak (PBP) in the clean system as well as in the presence of impurity scattering; in the cases of px+ipy- and dx2−y2+idxy-wave pairing the absorption below the PBP is forbidden in the clean system, but can be induced by impurities. Finally in the case of nodal f-wave pairing the general line shapes in the A1g and Eg channels are different, and there exists a strict universal linear Eg Raman response in the low energy limit for weak scattering rates. These features, combined with another probe of singlet versus triplet pairing, can be used to identify the relevant pairing symmetries unambiguously.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NaxCoO2·yH2O Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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