μSR study on the noncentrosymmetric superconductor NbGe2
J. C. Jiao, K. W. Chen, Adrian D. Hillier, T. U. Ito, W. Higemoto, Zheng Li, Baijiang Lv, Zhu-An Xu, Lei Shu
DOI 10.1103/PhysRevB.110.214516 · Physical Review B
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Abstract
We report on a muon spin relaxation (µSR) study on the polycrystalline noncentrosymmetric superconductor NbGe2 with superconducting transition temperature Tc=2.0–2.1 K. The zero-field µSR experiment indicates the absence of a spontaneous magnetic field in the superconducting state, showing the preservation of time-reversal symmetry in the superconducting state. The transverse-field µSR experiment is performed to map the phase diagram of NbGe2, from which clear evidence of both type-I and type-II superconductivities is obtained. More importantly, we clearly delineate the region in the phase diagram where type-I and type-II superconductivities coexist.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NbGe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2 | Pressure not reported | onset |
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