Ultralow and Anisotropic Thermal Conductivity in Semiconductor As2Se3

Robert L. González-Romero, Alex Antonelli, Anderson S. Chaves +1

An ultralow lattice thermal conductivity of 0.14 W$\cdot$ m${}^{-1}\cdot$ K${}^{-1}$ along the $\vec{b}$ axis of As${}_2$Se${}_3$ single crystals was obtained at 300 K by first-principles…