Evidence for s-wave superconductivity in noncentrosymmetric Re3W from magnetic penetration depth measurements
Yuri L. Zuev, Valentina A. Kuznetsova, Ruslan Prozorov, Matthew D. Vannette, Maxim V. Lobanov, David K. Christen, James R. Thompson
DOI 10.1103/PhysRevB.76.132508 · Physical Review B
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Abstract
We report measurements of the temperature dependence of the magnetic penetration depth λ(T) in noncentrosymmetric superconductor Re3W. We employed two experimental techniques: extraction of λ(T) from magnetic dc susceptibility, measured on a powder sample, and the rf tunnel diode resonator technique, where a bulk polycrystalline sample was used. The results of both techniques agree: the temperature dependence of the penetration depth can be well described by weak-coupling, dirty-limit, s-wave BCS theory where we obtain Δ(0)∕kBTC=1.76±0.05. No evidence for unconventional pairing resulting from the absence of the inversion symmetry is found.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Re3W Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.4 | Pressure not reported | onset |
| Re3W Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9 | Pressure not reported | unknown |
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