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Electronic Structure of Warm Dens Matter via Multicenter Green's Function Technique

FWP/Project Description: 

The proposed research addresses the Warm Dense Matter area identified in the Report of the ReNeW in HEDLP. The electronic structure, equation of state, radiative, and transport properties of warm electrons in an amorphous or disordered configuration of ions are not well described by either solid state or plasma models. Such warm-dense systems share the characteristic of the solid state that multi-center scattering effects are of paramount importance in forming bands of valence states, but furthermore require the description of an appreciable occupation in higher energy and angular momentum channel continuum states.

This research is supported by the U.S. Department of Energy, Office of Fusion Energy Sciences.

“Explosive” atom movement is new window into growing metal nanostructures

“The textbook said we should see slow, gradual and random. But what we saw? BOOM! Fast, explosive and organized!” said Michael Tringides, physicist at the U.S. Department of Energy’s Ames Laboratory and a professor of physics and astronomy at Iowa State University.

Tringides is talking about the unusual atom movement he saw when they dropped a few thousand lead atoms onto a flat, smooth lead-on-silicon surface, all at low temperatures, and looked at an area just one-twentieth the width of a human hair.

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