Phonons and the Ioffe-Regel crossover in random lattices with arbitrary dimension
نویسندگان
چکیده
In the frame of random matrix theory, it was shown, that relaxation projection initial plane wave with vector q is described by equation motion memory function which corresponds to complex dynamical Young modulus E(ω). harmonic scalar model displacements absence energy dissipation, Ioffe-Regel crossover arises universally in amorphous systems dimension d≥3. Vibrations above are related diffusive nature and can be diffusion damping ( q) propto 2 . Keywords: Amorphous solids, diffusons, matrices.
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ژورنال
عنوان ژورنال: Fizika tverdogo tela
سال: 2022
ISSN: ['0367-3294', '1726-7498']
DOI: https://doi.org/10.21883/pss.2022.14.54323.06s