Electronic Properties of Single-molecule Junctions

Electronic properties of organic single-molecule junctions

Thermoelectric Properties of Single Molecule Junctions

Probing Electronic and Thermoelectric Properties of Single Molecule Junctions Jonathan R. Widawsky In an effort to further understand electronic and thermoelectric phenomenon at the nanometer scale, we have studied the transport properties of single molecule junctions. To carry out these transport measurements, we use the scanning tunneling microscope-break junction (STM-BJ) technique, which in...

Role of solvents in the electronic transport properties of single-molecule junctions

We report on an experimental study of the charge transport through tunnel gaps formed by adjustable gold electrodes immersed into different solvents that are commonly used in the field of molecular electronics (ethanol, toluene, mesitylene, 1,2,4-trichlorobenzene, isopropanol, toluene/tetrahydrofuran mixtures) for the study of single-molecule contacts of functional molecules. We present measure...

Orientation-controlled single-molecule junctions.

The conductivity of a single aromatic ring, perpendicular to its plane, is determined using a new strategy under ambient conditions and at room temperature by a combination of molecular assembly, scanning tunneling microscopy (STM) imaging, and STM break junction (STM-BJ) techniques. The construction of such molecular junctions exploits the formation of highly ordered structures of flat-oriente...

Electronic properties of nanoribbon junctions

We investigate the effects of nitrogen impurities on the electronic properties of quantum dots realized in Z-shaped graphene nanoribbon junction. The system is studied using first principle calculations, based on the local spin density approximation (LSDA). Our results indicate that the presence of the impurities drastically changes the configuration of the localized states in the quantum dot. ...