The transport of phonons, which are the dominant heat carriers in non-metallic solids, is usually diffusive and describable by Fourier’s law of heat conduction. Regimes where Fourier’s law breaks down ...

WEST LAFAYETTE, Ind. – New findings have solved a longstanding obstacle in research to understand the effects of heat conduction in solid materials, a critical issue in many applications, from energy ...

A new study published in Nature Physics introduces a theory of electron-phonon coupling that is affected by the quantum geometry of the electronic wavefunctions. The movement of electrons in a lattice ...

New research has uncovered a novel way to combine two different states of matter. For one of the first times, topological photons -- light -- has been combined with lattice vibrations, also known as ...

Physicists have developed a new technique to probe elementary quantum excitations of atomic vibrations inside a diamond crystal under ambient conditions. The technique uses ultra-short laser pulses ...

Researchers in China have built a new device that can create a laser beam out of sound particles. The sound laser, developed by a team at Hunan Normal University in Changsha, is 10 times more powerful ...

Physicists in the UK and Russia have revived concepts first put forth in the 1940s to develop a new theory of the heat capacity of liquids. Created by Dima Bolmatov and Kostya Trachenko of Queen Mary, ...

Andrew N. Cleland receives funding from various US federal funding agencies. He is a fellow of the American Physical Society (APS) and the American Association for the Advancement of Science. He is ...