Microcavity exciton‐polaritons are attractive quantum quasi‐particles resulting from strong
light–matter coupling in a quantum‐well‐cavity structure. They have become one of the most …

Bose–Einstein condensation, is one of the most fascinating phenomena predicted by
quantum mechanics. It involves the formation of a collective quantum state composed of …

Separate theoretical and experimental investigations of the effect of lattice anharmonicity on
the A 1 g phonon dynamics in photoexcited bismuth are presented. First-principles density …

The room-temperature dynamics of a magnon gas driven by short microwave pumping
pulses is studied. An overpopulation of the lowest energy level of the system following the …

The review reports recent progress in experimental and theoretical studies of structure and
properties of the C 6 H 12 N 2 molecule (DABCO) in metal-organic frameworks M 2 (C 8 H 4 …

The thermalization of parametrically pumped magnons caused by nonlinear multimagnon
scattering processes and leading to the magnon Bose-Einstein condensation is investigated …

Bismuth has been a model material in the study of femtosecond dynamics of coherent lattice
oscillations. The generation mechanism was first proposed to be displacive for the …

Layered tin selenide (SnSe) has recently emerged as a high-performance thermoelectric
material with the current record for the figure of merit (ZT) observed in the high-temperature …

The ability to control monochromatic and coherent phonons is crucial for many phonon-
related applications but remains very challenging. Here, we demonstrate a promising …

Under suitable experimental conditions, collective spin-wave excitations, magnons, form a
Bose–Einstein condensate (BEC), where the spins precess with a globally coherent phase …