The electrical transport properties of individual carbon nanotubes (CNTs) and multi-terminal junctions of CNTs are investigated with a quadraprobe scanning tunneling microscope. The CNTs used in this study are made of stacked herringbone-type conical graphite ...
Metallic nanowires are of great interest as interconnects in nanoelectronic devices. They also represent important systems for understanding the complexity of electronic interactions and conductivity in one dimension. We have fabricated exceptionally long and uniform ...
We describe the development and the capabilities of an advanced system for nanoscale electrical transport studies. This system consists of a low temperature four-probe scanning tunneling microscope (STM) and a high-resolution scanning electron microscope coupled to a molecular-beam epitaxy sample preparation chamber. The four STM probes can be manipulated ...
The strain-relieving mechanism and local electronic density of states of a wetting film, was studied in the Ag on W system using scanning tunneling microscopy and spectroscopy. In the Ag wetting film, a periodic bright ...
The growth behavior and atomic structure of the Ag wetting layer grown on the W(110) surface, was studied with scanning tunneling microscopy. Deposited Ag atoms preferentially adsorb at the step edges and reveal a step-flow ...
We produced single-crystalline Fe nano dot arrays grown in situ on a W(110) substrate in an ultrahigh vacuum system. An alumina shadow mask with perfectly ordered holes was used for Fe deposition. Polycrystalline Fe nano ...
The growth behavior of Cr ad-layer on W(110) surface was studied with scanning tunneling microscopy. Two-dimensional islands are formed at Cr coverage of ∼0.3 monolayer, suggesting typical homogeneous nucleation. The growth mode undergoes a transition to ...
Two competing structures, “ridges” and “troughs,” are observed in the first epitaxial layer of Ag on the W(110) surface with a scanning tunneling microscope. The mixed tensile and compressive strain is locally relieved by ridges ...
