4 papers · 1 filter
Impact of Phonon-Magnon Scattering on Thermal Transport across Antiferromagnetic and Ferromagnetic Oxides
Zeyu Xiang, Bolin Liao
Phonon--magnon coupling has been extensively studied in ferromagnets, whereas its microscopic mechanisms in antiferromagnets remain less understood. Here, we combine first-principl…
Slow Thermalization and Long-Lived Coherence across Acoustic Phonon Branches in BAs
Zeyu Xiang, Ying Peng, Ange Benise Niyikiza +11
The exceptionally high thermal conductivity of cubic boron arsenide (BAs) arises from suppressed three-phonon scattering associated with its large acoustic--optical gap. In this re…
Reversible Modulation of Thermal Conductivity in GaN through Strain-Field Screening around Dislocations
Shantal Adajian, Fanghao Zhang, Andrew Christison +9
Crystalline defects are generally regarded as static phonon scatterers that irreversibly suppress thermal transport. Here we show that elastic strain can reversibly modify dislocat…
Coupled Spin-lattice Dynamics across a Magnetostructural Phase Transition
Lokanath Patra, Zeyu Xiang, Yubi Chen +1
First-order magnetostructural phase transitions underpin giant magnetocaloric effects, yet the microscopic role of lattice dynamics in these transitions remains controversial. Here…