Origin of the boson peak in amorphous solids | Nature Physics
WEBJun 6, 2022 · One of the universal features of disordered solids is the excess vibrational density of states, known as the ‘boson peak’. Here we study the microscopic origin of the boson peak through...
Boson Peak - an overview | ScienceDirect Topics
WEBThe boson peak is a broad peak found in the low-frequency region of Raman scattering spectra in a wide range of many solid state materials, including amorphous films, inorganic glasses, liquids/melts, polymers/bio-polymers, and partially crystalline materials [80–87].
Understanding the emergence of the boson peak in molecular …
WEBJan 13, 2023 · The boson peak in the vibrational spectrum matches the excess heat capacity. As the boson peak intensifies on cooling, wide-angle x-ray scattering shows the simultaneous appearance of a...
Observation of the boson peak in a two-dimensional material
WEBSep 4, 2023 · The boson peak is an excess in the phonon vibrational density of states relative to the Debye model. It has been observed in a wide range of amorphous materials, from inorganic...
Universal Origin of Boson Peak Vibrational Anomalies in Ordered ...
WEBApr 10, 2019 · The theory explains the recent experimental observations of boson peak in perfectly ordered crystals, which cannot be explained based on previous theoretical frameworks.
WEBAnalysis of the first sharp diffraction peak in temperature-dependent small and wide-angle x-ray scattering experiments show inhomogeneous broad-ening and a weak pre-peak in the glass—corresponding to clusters about three TBOS molecules …
Structural rationale for boson peak in metallic glass informed by …
WEBMay 22, 2023 · In amorphous solids, there exists a universal phenomenon of vibrational anomaly, i.e., an excess of vibrational modes over the Debye level in the low-terahertz-frequency regime, which is termed a boson peak.
The origin of the boson peak and thermal conductivity plateau in …
WEBWe argue that the intrinsic glassy degrees of freedom in amorphous solids giving rise to the thermal conductivity plateau and the “boson peak” in the heat capacity at moderately low temperatures ar...
Structural origins of the boson peak in metals: From high-entropy ...
WEBDec 14, 2016 · The boson peak appears in all amorphous solids and is an excess of vibrational states at low frequencies compared to the phonon spectrum of the corresponding crystal. Until recently, the consensus was that it originated from “defects” in the glass.
Understanding the emergence of the boson peak in molecular …
WEBApr 20, 2022 · One of the common features of a glass is the so-called “boson peak”, observed as an excess in the heat capacity over the crystal or as an additional peak in the terahertz vibrational spectrum.
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