Electrical Transport in Dy Metallofullerene Peapods

If endohedral metallofullerenes are inserted into a single‐walled carbon nanotube (SWNT), a linear chain of metallofullerenes will form in the interior of the tube, the resulting structure is named metallofullerene peapod. C82 molecules each containing a single Dysprosium atom have been filled into single‐walled carbon nanotubes. The success of filling was verified by transmission electron microscopy (TEM). Transport measurements in field‐effect transistor configuration were performed on (Dy@C82)n@SWNT metallofullerene peapods. Several (Dy@C82)n@SWNT structures exhibit so‐called ambipolar Isd(Vg) characteristics at 4.2 K.