Abstract
We report muon spin rotation (µSR) experiments on the microscopic properties of superconductivity and magnetism in the kagome superconductor CeRu2 with T c ≃ 5 K. From the measurements of the temperature-dependent magnetic penetration depth λ, the superconducting order parameter exhibits nodeless pairing, which fits best to an anisotropic s-wave gap symmetry. We further show that the T c /λ −2 ratio is comparable to that of unconventional superconductors. Furthermore, the powerful combination of zero-field (ZF)-µSR and high-field µSR has been used to uncover magnetic responses across three characteristic temperatures, identified as T 1 ∗ ≃ 110 K, T 2 ∗ ≃ 65 K, and T 3 ∗ ≃ 40 K. Our experiments classify CeRu2 as an exceedingly rare nodeless magnetic kagome superconductor.
Original language | English (US) |
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Article number | 485601 |
Journal | Journal of Physics Condensed Matter |
Volume | 34 |
Issue number | 48 |
DOIs | |
State | Published - Nov 30 2022 |
All Science Journal Classification (ASJC) codes
- General Materials Science
- Condensed Matter Physics
Keywords
- kagome lattice
- magnetism
- muon spin rotation
- superconductivity