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Quasicrystal-related phases in tetrahedral semiconductors: Structure, disorder, and ab initio calculations
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TLDR
In this paper, a detailed ab initio study of the BT8 and BC32 phases in silicon was performed in a density-functional theory in the local density approximation, and it was shown that the energy barrier for phason defect formation in the BC8 phase is about 0.12 eV per jumping atom and the energy of the defect is very small (less then 0.02eV per hopping atom).Citations
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High-pressure phases of group IV and III-V semiconductors
TL;DR: The currently known structures and properties of group?IV elements and III-V compounds at high pressure are reviewed in this article, and the relative equilibrium stability of these phases, as determined by theoretical methods, is also discussed.
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Ab initio study of the enthalpy barriers of the high-pressure phase transition from the cubic-diamond to the β-tin structure of silicon and germanium
TL;DR: In this paper, the phase transition from cubic diamond to the β-tin structure of Si and Ge was investigated using the plane-wave pseudopotential approach to density-functional formalism within the local density approximation.
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Exotic silicon phases synthesized through ultrashort laser-induced microexplosion: Characterization with Raman microspectroscopy
Lachlan A. Smillie,M. Niihori,Ludovic Rapp,Bianca Haberl,James Williams,Jodie Bradby,Chris J. Pickard,Chris J. Pickard,Andrei Rode +8 more
TL;DR: In this article, noninvasive Raman spectroscopy was used for analysis of laser-modified zones in silicon and to determine the metastable high-pressure phases contained in the modifications.
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Three-dimensional photonic quasicrystal with a complete band gap
TL;DR: The band structure of three-dimensional cubic approximants of a photonic quasicrystal has been determined by numerical calculation as discussed by the authors, and the existence of the complete band gap in the six-dimensional bcc lattice is shown.
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Generalized crystallography of diamond-like structures. 1. Finite projective planes and specific clusters of diamond-like structures determined by these planes
TL;DR: In this article, it was shown that the incidence graphs of specific subconfigurations of a finite projective plane PG(2, q) with q = 2, 3, 4 are invariant with respect to the groups of projective geometry that have orthogonal groups as subgroups.
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