Searching for Ideal Topological Superconductors in Pb-Sn-In-Te System

The discovery of 3D topological insulator materials and topological<br/>superconductor open up a new research field in the condensed matter physics. In<br/>order to search for the topological superconductor, we have grown a large number<br/>of the single crystals of Pb-system ( Pb-Sn-In-Te) topological superconductor .<br/>We have measured the physical properties on these single crystals by various<br/>techniques. We have studied the effect of crystal growth condition, impurity and<br/>composition on the bulk electrical conductivity of these single crystals. We try to<br/>find out which composition and crystal growth condition is the best for the ideal<br/>topological superconductor. We have got the bulk topological superconductor<br/>with T c =5K.