We have observed superconducting properties in three dimensional Cu xGe100-x samples with 38≤x≤67. Transition temperature Tc is about 0.4 K. Upper critical magnetic field H c2 has been measured in these samples confirming that they are indeed superconductors. Near the zero field Tco, Hc2 depends linearly on temperature. Our results show robust superconducting properties present in CuGe samples with weakly disorder.
- Weak disorder