Metal chalcogenides based on the C–M–M–C (C = chalcogen, M = metal) structure possess several attractive properties that can be utilized in both electrical and optical devices. We have shown that specular, large area films of γ-InSe and Sb2Se3 can be grown via atomic layer deposition (ALD) at relatively low temperatures. Optical (absorption, Raman), crystalline (X-ray diffraction), and composit...

Non-layer structured nanomaterials with single- or few-layer thickness have two-dimensional sheet-like structures and possess intriguing properties. Recent years have seen major advances in development of a host of non-layer structured ultrathin two-dimensional nanomaterials such as noble metals, metal oxides and metal chalcogenides. The wet-chemical synthesis has emerged as the most promising ...

— In this paper we describe the use of muffin tin orbital techniques, employed in a variety of approximations, to help understand the band structure and bonding in actinide metals and compounds. Simple methods of assessing bandwidfhs and placings, readily accessible to experimentalists, are reviewed for both metals and compounds and their limitations discussed. Examples from the uranium monopni...

Hollow nanocrystals can be synthesized through a mechanism analogous to the Kirkendall Effect, in which pores form because of the difference in diffusion rates between two components in a diffusion couple. Starting with cobalt nanocrystals, we show that their reaction in solution with oxygen and either sulfur or selenium leads to the formation of hollow nanocrystals of the resulting oxide and c...

We describe an approach for producing robust multimaterial chalcogenide glass fibers for mid-wave and long-wave mid-infrared transmission. By combining the traditional rod-in-tube process with multimaterial coextrusion, we prepare a hybrid glass-polymer preform that is drawn continuously into a robust step-index fiber with a built-in, thermally compatible polymer jacket. Using tellurium-based c...

One promising setting to explore these issues is the iron chalcogenides, which host the highest Tc among the FeSCs (65 K, as determined by the onset of the Meissner effect [1]). There is an emerging consensus that the electron correlations are strong in these systems. Because of the strong correlations, the low-energy physics may be considered in an orbitalselective way. This notion has been ve...