Andreev reflection study of the new magnetic superconductor Mo3Sb7 in magnetic field

摘要: Andreev reflection in contacts based on the magnetic superconductor Mo3Sb7 a field is investigated by point-contact method. It found that behavior of order parameter Δ(H) essentially dependent value Δ, which varies widely (Δ(0,0)≈0.01–0.31meV) for different at practically invariant Tc. At high Δ dependence Δmax(H) deviates slightly from theoretical prediction applicable under conditions. As decreases, deviation starts to increase and becomes very large when approaches its minimum. Proceeding results obtained this study temperature measurements performed previously, we are inclined as before assign compound class superconductors with an anisotropic gap function. Therefore, no way can it be considered conventional BCS-type superconductor. The upper critical Hc2≃16.5kOe here close magnetization m...