Author

B. Liao

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Preprint Oct 2026

Nanocrystalline cubic boron arsenide growth on GaAs(100) by gas source molecular beam epitaxy

Cubic boron arsenide (c-BAs) is a promising ultrahigh thermal conductivity semiconductor, but its direct synthesis on lattice-mismatched substrates remains challenging. Here, we demonstrate the synthesis of nanocrystalline c-BAs thin films on GaAs(100) substrates using gas source molecular beam epitaxy. X-ray photoelec...

Matthew A. Delmont, Yu Wu, Han-Hsuan Wu et al. · 0 citations

Preprint Sep 2026

Slow Thermalization and Long-Lived Coherence across Acoustic Phonon Branches in BAs

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 regime, four-phonon processes become non-negligible, creating an unusual scattering hierarchy with unexplored consequences for nonequilibrium...

Ze-Yu Xiang, Ying Peng, Ange Benise Niyikiza et al. · 0 citations

Preprint Sep 2026

Impact of Phonon-Magnon Scattering on Thermal Transport across Antiferromagnetic and Ferromagnetic Oxides

Phonon--magnon coupling has been extensively studied in ferromagnets, whereas its microscopic mechanisms in antiferromagnets remain less understood. Here, we combine first-principles calculations with spin--lattice dynamics to investigate phonon--magnon interactions and their impact on thermal transport in antiferromag...

Ze-Yu Xiang, B. Liao · 0 citations