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Showing 2024 · cond-mat.mtrl-sciShow all

6 papers · 2 filters

cond-mat.mtrl-sci2024

Stable Thin Clathrate Layers

Eva Pospíšilová

We explore elemental Si, Ge and Sn free-standing slabs in diamond, clathrate and other competing structures and evaluate their stability by comparing Kohn-Sham total energies at th…

cond-mat.mtrl-sci2024★ 3 cited

Photon-assisted ultrafast electron-hole plasma expansion in direct band semiconductors

T. Troha, F. Klimovič, T. Ostatnický +2

Time-resolved terahertz spectroscopy is used to investigate formation and ultrafast long-distance propagation of electron-hole plasma in strongly photoexcited GaAs and InP. The obs…

cond-mat.mtrl-sci2024★ 11 cited

Accurate prediction of structural and mechanical properties on amorphous materials enabled through machine-learning potentials: a case study of silicon nitride

Ganesh Kumar Nayak, Prashanth Srinivasan, Juraj Todt +3

Amorphous silicon nitride (a-SiN) is a material which has found wide application due to its excellent mechanical and electrical properties. Despite the significant effort devoted i…

cond-mat.mtrl-sci2024★ 1 cited

Ultrafast terahertz conductivity in epitaxial graphene nanoribbons: an interplay between photoexcited and secondary hot carriers

Arvind Singh, Hynek Němec, Jan Kunc +1

Optical pump-terahertz probe spectroscopy has been used to investigate ultrafast photo-induced charge carrier transport in 3.4 m wide graphene ribbons upon scaling the optical p…

cond-mat.mtrl-sci2024★ 11 cited

High-temperature threshold of damage of SiC by swift heavy ions

D. I. Zainutdinov, V. A. Borodin, S. A. Gorbunov +5

At ambient conditions, SiC is known to be resistant to irradiation with swift heavy ions (SHI) decelerating in the electronic stopping regime. However, there is no experimental dat…

cond-mat.mtrl-sci2024★ 10 cited

Detecting the spread of valence band Wannier functions by optical sum rules

Luis F. Cárdenas-Castillo, Shuai Zhang, Denis Kochan +2

The spread of valence band Wannier functions in semiconductors and insulators is a characteristic property that gives a rough estimation of how insulating is the material. We elabo…