Intrinsically ultralow thermal conductivity in all-inorganic superatomic bulk crystals
This study reports the successful growth of high-quality all-inorganic superatomic single crystals (Re6Se8Te7 and Re6Te15) that exhibit intrinsically ultralow thermal conductivity at room temperature, a property attributed to their unique structural composition of rigid clusters embedded in soft networks which induces strong anharmonicity and glass-like phonon transport.