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. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]