It is found that discrete breathers with frequencies above the top of the phonon spectrum may exist in some metals (Ni, Fe, Cu) and semiconductors (Ge, diamond). It is shown that these excitations in metals may propagate in crystals along crystallographic directions transferring energy of ≳1 eV over large distances.
CITATION STYLE
Hizhnyakov, V., Haas, M., Shelkan, A., & Klopov, M. (2015). Standing and moving discrete breathers with frequencies above the phonon spectrum. Springer Series in Materials Science, 221, 229–245. https://doi.org/10.1007/978-3-319-21045-2_9
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