High carrier mobility and ultralow thermal conductivity in the synthetic layered superlattice Sn<sub>4</sub>Bi<sub>10</sub>Se<sub>19</sub>
Ruiming Lu, Alan Olvera, Trevor P. Bailey, Jiefei Fu, Xianli Su, Igor Veremchuk, Zhixiong Yin, Brandon Buchanan, Ctirad Uher, Xinfeng Tang, Yuri Grin, Pierre F. P. Poudeu
Abstract
Phonon scattering from Bi<sub>2</sub>Se<sub>3</sub>/SnSe/Bi<sub>2</sub>Se<sub>3</sub> interfaces and high carrier mobility within the 2D Bi<sub>2</sub>Se<sub>3</sub>-layer lead to the coexistence of ultralow lattice thermal conductivity and high electrical conductivity in the Sn<sub>4</sub>Bi<sub>10</sub>Se<sub>19</sub> synthetic superlattice.
Topics & Concepts
SuperlatticeThermal conductivityElectron mobilityMaterials scienceElectrical resistivity and conductivityScatteringCondensed matter physicsPhononConductivityPhonon scatteringOptoelectronicsChemistryOpticsPhysicsPhysical chemistryQuantum mechanicsComposite materialAdvanced Thermoelectric Materials and DevicesThermal properties of materialsChalcogenide Semiconductor Thin Films