title: Controlled atomic doping of a single C60 molecule.
abstract: We report a method for controllably attaching an arbitrary number of charge dopant atoms directly to a single, isolated molecule. Charge-donating K atoms adsorbed on a silver surface were reversibly attached to a C60 molecule by moving it over K atoms with a scanning tunneling microscope tip. Spectroscopic measurements reveal that each attached K atom donates a constant amount of charge (approximately 0.6 electron charge) to the C60 host, thereby enabling its molecular electronic structure to be precisely and reversibly tuned.
authors.affiliation: Department of Physics, University of California at Berkeley, and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720-7300, USA.
authors.forename: R
authors.initials: R
authors.lastname: Yamachika
authors.forename: M
authors.initials: M
authors.lastname: Grobis
authors.forename: A
authors.initials: A
authors.lastname: Wachowiak
authors.forename: M F
authors.initials: MF
authors.lastname: Crommie