Andrew J Stollenwerk

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We use a scanning tunneling microscope to probe single-electron charging phenomena in individual CdSe/ ZnS core/shell quantum dots QDs at room temperature. The QDs are deposited on top of a bare Au thin film and form a double-barrier tunnel junction DBTJ between the tip, QD, and substrate. Analysis of roomtemperature hysteresis in the current-voltage IV(More)
The ability to form patterned surface nanostructures has revolutionized the miniaturization of electronics and led to the discovery of emergent behaviors unseen in macroscopic systems. However, the creation of such nanostructures typically requires multiple processing steps, a high level of technical expertise, and highly sophisticated equipment. In this(More)
Despite an enormous amount of research on carbon based nanostructures, relatively little is known about the electronic structure of multi-walled carbon fullerenes, also known as carbon onions. In part, this is due to the very high computational expense involved in estimating electronic structure of large molecules. At the same time, experimentally, the(More)
We present the results of extensive Monte Carlo simulations of intercalated manganese-titanium (Mn-Ti) layered TiS2 crystals. The computational model involves mixtures of Mn and Ti in various percentages placed on a triangular lattice with fixed lattice sites and up to five layers. The range of concentrations of intercalated Mn studied was 5%  ⩽  X Mn  ⩽ (More)
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