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cond-mat.mtrl-sci2018★ 5 cited
Temperature-driven narrowing of the insulating gap as a precursor of the insulator-to-metal transition: Implications for the electronic structure of solids
Vassiliy Lubchenko, Arkady Kurnosov
We present a microscopic picture rationalizing the surprisingly steep decrease of the band gap with temperature in insulators, crystalline or otherwise. The gap narrowing largely r…
cond-mat.mtrl-sci2017
Structural origin of the midgap electronic states and the Urbach tail in pnictogen-chalcogenide glasses
Alexey Lukyanov, Jon C. Golden, Vassiliy Lubchenko
We determine the electronic density of states for computationally-generated bulk samples of amorphous chalcogenide alloys AsSe. The samples were generated using a s…
cond-mat.mtrl-sci2006
A Universal Criterion of Melting
Vassiliy Lubchenko
Melting is analyzed dynamically as a problem of localization at a liquid-solid interface. A Lindemann-like criterion of melting is derived in terms of particular vibrational amplit…