3 papers
cond-mat.mtrl-sci2026
Dimensionality Mismatch Enables Decoupled Heat and Charge Transport
Luman Shang, Shuming Zeng, Chenhan Liu +1
Decoupling heat and charge transport is a key challenge in thermoelectrics. Here, we identify a route to spatially separate phonon and carrier transport in quasi-one-dimensional ma…
cond-mat.mtrl-sci2026
Evolution of Phonon Transport Across Structural Phase Transitions in MgAgSb
Luman Shang, Yu Wu, Yufan Liu +3
MgAgSb, a promising thermoelectric material, undergoes reversible phase transitions that drastically alter its thermal transport behavior. Using first-principles calculations, we s…
cond-mat.mtrl-sci2026
Rotational Soft Modes and Octahedral Distortion as Design Principles for Ultralow Thermal Conductivity in Halide Materials
Yu Wu, Luman Shang, Yufan Liu +4
We establish that ultralow lattice thermal conductivity in halide perovskites and related octahedral framework materials arises from two distinct and complementary mechanisms: (i)…