Superconductivity with High Upper Critical Field in the Cubic Centrosymmetric η-Carbide Nb₄Rh₂C_1-δ.

ABSTRACT: The upper critical field is a fundamental measure of the strength of superconductivity in a material. It is also a cornerstone for the realization of superconducting magnet applications. The critical field arises because of the Cooper pair breaking at a limiting field, which is due to the Pauli paramagnetism of the electrons. The maximal possible magnetic field strength for this effect is commonly known as the Pauli paramagnetic limit given as μ₀ H _Pauli ≈ 1.86[T/K]·T _c for a weak-coupling Bardeen-Schrieffer-Cooper (BCS) superconductor. The violation of this limit is only rarely observed. Exceptions include some low-temperature heavy Fermion and some strongly anisotropic superconductors. Here, we report on the superconductivity at 9.75 K in th

SUBMITTER: Ma K 

PROVIDER: S-EPMC9888667 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature