Microwave Conductivity and Penetration Depth in the Heavy Fermion Superconductor CeCoIn5
Rodrigo J. Ormeno, A. Sibley, Colin E. Gough, S. Sebastian, I. R. Fisher
DOI 10.1103/PhysRevLett.88.047005 · Physical Review Letters
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Abstract
The electrodynamic properties of the quasi-two-dimensional heavy fermion superconductor CeCoIn5 have been investigated by microwave surface impedance measurements over a wide range of microwave frequencies and temperatures. We derive a value penetration depth λ(0)∼190nm, with a strong linear term in the temperature dependence of λ(T) below Tc/3, consistent with a superconducting gap with line nodes. The real part of the conductivity displays a broad peak at low temperatures consistent with a decreased scattering rate of almost 2 orders of magnitude below Tc. CeCoIn5 has remarkably similar properties to those of the high- Tc cuprates.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CeCoIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.2 | Pressure unresolved | unknown |
| CeCoIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.3 | Pressure unresolved | unknown |
| CeIrIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.4 | Pressure unresolved | unknown |
| CeRhIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.1 | 1.6 GPa | unknown |
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