H. C. Jacks
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View article: Structural tunability and origin of two-level systems in amorphous silicon
Structural tunability and origin of two-level systems in amorphous silicon Open
Amorphous silicon films prepared by electron-beam evaporation have systematically and substantially greater atomic density for higher thickness, higher growth temperature, and slower deposition rate, reaching the density of crystalline Si …
View article: Decoupling between propagating acoustic waves and two-level systems in hydrogenated amorphous silicon
Decoupling between propagating acoustic waves and two-level systems in hydrogenated amorphous silicon Open
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 at 200 {\deg}C, well below the growth temperature, does not…
View article: Two-level systems and growth-induced metastability in hydrogenated amorphous silicon
Two-level systems and growth-induced metastability in hydrogenated amorphous silicon Open
Specific heat measurements from 2 to 300 K of hydrogenated amorphous silicon prepared by hot-wire chemical vapor deposition show a large excess specific heat at low temperature, significantly larger than the Debye specific heat calculated …
View article: Identifying Structures Responsible for Two-Level Systems in Amorphous Silicon
Identifying Structures Responsible for Two-Level Systems in Amorphous Silicon Open
Tunneling two-level systems (TLS) are considered by the glass community to be a hallmark characteristic of amorphous materials and even the disorder that is inherent to these systems. They are observed in all glassy materials and have thus…