Condensed Matter Seminars

Emerging two-dimensional (2D) materials, such as graphene and atomically thin transition metal dichalcogenides, have been the subject of intense research efforts for their fascinating properties and potential applications in future electronic and optical devices. The interfaces in these 2D materials, including domain boundaries and edges, strongly govern the electronic and magnetic behavior and can potentially host new states. On the other hand these interfaces are more susceptible to thermal fluctuation and external stimuli that enable mass displacement and generate disorder. In this talk I will present our scanning tunneling microscopy (STM) and spectroscopy (STS) explorations of edges of few layered MoS₂ nanostructures with unique structural and electronic properties and show how step edges on TiSe₂ surfaces change dynamically due to electrical fields. I will also discuss temperature evolution of quasi-1D C₆₀ nanostructures on graphene.