Anomalous ground state in U0.9Th0.1Be13

Abstract By studying the transformation of transport, calorimetric and magnetic properties of U x Th 1− x Be 13 (0.64 ⩽ x ⩽ 1) solid solutions, we have found that U 0.9 Th 0.1 Be 13 displays a non-Fermi liquid ground state which corresponds to the two channel Kondo effect (TCKE). For the first time, together with the anomalous temperature dependences of the thermodynamic properties, we have observed that the resistivity changes as the square root of temperature, as had been predicted theoretically for TCKE.