STUDY OF THE DEINTERCALATION PROCESS IN BI2SE3 SINGLE-CRYSTALS TREATED WITH HYDRAZINE

High-quality single crystals of Bi,Se, were treated with hydrated hydr azine and the process was monitored by in situ conductivity and Hall e ffect measurements. The modified samples showed considerable shift of the plasma minimum. In the process of deintercalation, the location of plasma minimum changed back toward that of the pristine material. The similar monotonic and smooth variations of both plasma frequency and damping factor are discussed and conclusions about the dominating scat tering mechanisms are drawn, based on considerations of an appropriate energy model. (C) 1998 Elsevier Science Ltd.