The low-frequency vibrational and low-temperature thermal properties of amorphous solids
are markedly different from those of crystalline solids. This situation is counterintuitive …

Unlike crystalline solids, liquids lack long-range order, resulting in diffusive shear
fluctuations rather than propagating waves. Simulations predict that liquids exhibit ak-gap in …

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 …

One of the long-standing issues concerning the thermal properties of amorphous solids is
the complex pattern of phonon transport. Recent advances in experiments and computer …

Superconducting circuits are among the most advanced quantum computing technologies;
however, their performance is limited by losses found in surface oxides and disordered …

It has so far remained a major challenge to quantitatively predict the boson peak, a THz
vibrational anomaly universal for glasses, from features in the amorphous structure. Using …

Helium Atom Scattering (HAS) and Helium Spin-Echo scattering (HeSE), together helium
scattering, are well established, but non-commercial surface science techniques. They are …

The low-temperature thermal properties of glasses are anomalous with respect to those of
crystals. These thermal anomalies indicate that the low-frequency vibrational properties of …

Using inelastic neutron scattering and molecular dynamics simulations on a model Zr-Cu-Al
metallic glass, we show that transverse phonons persist well into the high-frequency regime …

We present a random matrix approach to study the general vibrational properties of stable
amorphous solids with translational invariance using the correlated Wishart ensemble …