RKKY INTERACTION IN TRANSITION-METAL INTERCALATION COMPOUNDS OF 1T-TYPE TIS2

For intercalation compounds of TiS2 RKKY coupling is calculated by usi ng the first-principles band structure of TiS2 and by assuming the rig id band model. As a function of distance the RKKY coupling shows a cha racteristic feature depending on the concentration of the intercalant atom. In particular the RKKY coupling along the c-axis is much smaller than that in the c-plane reflecting two-dimensional character of the band structure of TiS2.