WebJun 6, 2024 · Here we study the microscopic origin of the boson peak through numerical investigations of the dynamic structure factor of two-dimensional model glasses over a wide frequency–wavenumber range ... WebJan 17, 2014 · A common feature of glasses is the “boson peak”, observed as an excess in the heat capacity over the crystal or as an additional peak in the terahertz vibrational spectrum. The microscopic ...

Universal link between the boson peak and transverse phonons in glass

WebJan 11, 2002 · A universal mechanism of the Boson peak formation in glasses is proposed. The mechanism is based on the concept of interacting quasilocal oscillators. Even in the case of weak interaction,... WebDec 14, 2016 · The boson peak is an excess in the vibrational spectrum of amorphous solids, which was recently conjectured to be simply related to features already inherent in the vibrations of the corresponding crystal. In this work, the authors reveal that this is not the case, at least for metallic systems. Using atomic-scale computer simulations of a four … brody curry

Study on the boson peak in bulk metallic glasses

WebMay 31, 2011 · Experiments suggest that the celebrated “boson peak”—a low-frequency vibrational feature characteristic of amorphous materials—may be related to a well-known phonon singularity in ordered … WebFeb 10, 2003 · Conclusion. We have explained the microscopic origin of the excess of density of states in amorphous solids leading to the so-called boson peak in the heat … WebAug 20, 2024 · The boson peak in the terahertz range is the low-energy excitations in glasses and disordered crystals. It is related to the excess part of the vibrational density of states. Borate glass is one of the typical network oxide glasses with covalent bonds and belongs to the strong type of glass formers. Alkali metal ions are well-known modifiers of … car buy back europ