R. Pascal, Ch. Zarnitz, M. Bode, R. Wiesendanger  "Atomic and local electronic structure of Gd thin films studied by STM and STS" Phys. Rev. B 56, 3636 (1997).

R. Pascal, Ch. Zarnitz, M. Bode, R. Wiesendanger "STM-study of Gd/W(110) at submonolayer coverages" Surf. Sci. 385, L990 (1997).

Description:

The rare earth metal terbium ( Tb ) was evaporated onto a W(110) single crystal as a thin film. The thickness of the film was less than one single atomic layer. At this low coverage the Tb atoms arrange in parallel lines, so- called "superstructures", visible as colored stripes in this 125nm x 125nm STM image. Areas with different distances of the monoatomic stripes are visible. Since the electronic structure of the superstructures depend on this stripe distance, each superstructure exhibits a characteristic color in this three color composite.  This is the main scientific message of these images: different colors mean different electronic structure!

 Previous Day/Next Day

Please contact the webmaster if you would like to submit an image