669 citations · 800 across the 12 of their papers we have counts for
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Temperature effects on the structure and mechanical properties of vapor deposited a-SiO2
Vrishank Jambur, Manel Molina-Ruiz, Tom Dauer +7
Amorphous silica (a-SiO2) exhibits unique thermo-mechanical behaviors that set it apart from other glasses. However, there is still limited understanding of how this mechanical beh…
Structural tunability and origin of two-level systems in amorphous silicon
H. C. Jacks, M. Molina-Ruiz, M. H. Weber +5
Amorphous silicon films prepared by electron beam evaporation have systematically and substantially greater atomic density for higher thickness, higher growth temperature, and slow…
Decoupling between propagating acoustic waves and two-level systems in hydrogenated amorphous silicon
M. Molina-Ruiz, H. C. Jacks, D. R. Queen +3
Specific heat measurements of hydrogenated amorphous silicon prepared by hot-wire chemical vapor deposition show a large density of two-level systems at low temperature. Annealing…
Origin of Mechanical and Dielectric Losses from Two-Level Systems in Amorphous Silicon
M. Molina-Ruiz, Y. J. Rosen, H. C. Jacks +5
Amorphous silicon contains tunneling two-level systems, which are the dominant energy loss mechanisms for amorphous solids at low temperatures. These two-level systems affect both…
Microstructure dependence of low-temperature elastic properties in amorphous diamond-like carbon films
Xiao Liu, T. H. Metcalf, P. Mosaner +1
We have studied the internal friction and the relative change in the speed of sound of amorphous diamond-like carbon films prepared by pulsed-laser deposition from 0.3 K to room te…
Glass-Like Heat Conduction in High-Mobility Crystalline Semiconductors
J. L. Cohn, G. S. Nolas, V. Fessatidis +2
The thermal conductivity of polycrystalline semiconductors with type-I clathrate hydrate crystal structure is reported. Ge clathrates (doped with Sr and/or Eu) exhibit lattice ther…