Precursor state to superconductivity in CeIrIn5: Unusual scaling of magnetotransport
Sunil Nair, M. Nicklas, F. Steglich, J. L. Sarrao, J. D. Thompson, A. J. Schofield, S. Wirth
DOI 10.1103/PhysRevB.79.094501 · Physical Review B
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Abstract
We present an analysis of the normal-state Hall effect and magnetoresistance in the heavy-fermion superconductor CeIrIn5. It is demonstrated that the modified Kohler’s scaling—which relates the magnetoresistance to the Hall angle—breaks down prior to the onset of superconductivity due to the presence of a precursor state to superconductivity in this system. A model-independent single-parameter scaling of the Hall angle governed solely by this precursor state is observed. Neither the Hall coefficient nor the resistivity exhibits this scaling, implying that this precursor state preferentially influences the Hall channel.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CeIrIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.4 | Pressure unresolved | onset |
| CeCoIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.3 | Pressure unresolved | unknown |
| CeRhIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | 1.6 GPa | unknown |
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