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Quantum mechanics of dislocation kinks in covalent semiconductors
Author(s) -
Gosar P.
Publication year - 1977
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220790118
Subject(s) - quantum tunnelling , dislocation , condensed matter physics , semiconductor , covalent bond , lattice (music) , quantum , physics , materials science , classical mechanics , quantum mechanics , acoustics
A quantum‐mechanical model of the kink motion in covalent semiconductors is presented. A kink is treated as a quasi‐particle which is strongly coupled to the elastic continuum and can move along the dislocation by tunneling between neighbouring equilibrium sites. Kinks are most likely self‐trapped because of the deformation of the lattice. The calculation of the mobility at high temperatures reveals a thermally activated nature of the kink diffusion process.