Glass-Like Heat Conduction in High-Mobility Crystalline Semiconductors

Abstract

The thermal conductivity of polycrystalline semiconductors with type-I clathrate hydrate crystal structure is reported. Ge clathrates (doped with Sr and/or Eu) exhibit lattice thermal conductivities typical of amorphous materials. Remarkably, this behavior occurs in spite of the well-defined crystalline structure and relatively high electron mobility ($\sim 100c{m}^2/Vs$). The dynamics of dopant ions and their interaction with the polyhedral cages of the structure are a likely source of the strong phonon scattering.

4 pages, 3 postscript figures, to be published, Phys. Rev. Lett

Cited by in corpus (39)

• Phonon-glass electron-crystal thermoelectric clathrates: Experiments and theory
• Impact of Rattlers on Thermal Conductivity of a Thermoelectric Clathrate: A First-Principles Study
• Ultralow Thermal Conductivity in Full-Heusler Semiconductors
• Recent advances on thermoelectric materials
• Glasslike vs. crystalline thermal conductivity in carrier-tuned Ba8Ga16X30 clathrates (X = Ge, Sn)
• Lattice dynamics and reduced thermal conductivity of filled skutterudites
• Cage-size control of guest vibration and thermal conductivity in Sr8Ga16Si30-xGex
• Superconductivity in the New Platinum Germanides MPt4Ge12 (M = Rare-earth and Alkaline-earth Metals) with Filled Skutterudite Structure
• Phononic filter effect of rattling phonons in the thermoelectric clathrate Ba${}_8$Ge${}_{40+x}$Ni${}_{6-x}$
• Phonon Band Structure and Thermal Transport Correlation in a Layered Diatomic Crystal
• Characterization of rattling in relation to thermal conductivity: ordered half-Heusler semiconductors
• Structural, transport, and thermal properties of single crystalline type-VIII clathrate Ba8Ga16Sn30
• Thermal Conductivity of Methane-Hydrate
• Four-well tunneling states and elastic response of clathrates
• High $n$-type thermoelectric power factor and efficiency in Ba${}_2$BiAu from a highly dispersive band
• Kondo-like phonon scattering in thermoelectric clathrates
• Structure and stability of Ba-Cu-Ge type-I clathrates
• Predicting ground-state configurations and electronic properties of the thermoelectric clathrates Ba${}_8$Al${}_x$Si${}_{46-x}$ and Sr${}_8$Al${}_x$Si${}_{46-x}$
• Thermoelectric properties of 3D topological insulator: Direct observation of topological surface and its gap opened states
• Suppression of vacancies boosts thermoelectric performance in type-I clathrates
• Tunable charge carriers and thermoelectricity of single-crystal Ba8Ga16Sn30
• Ab initio studies on the lattice thermal conductivity of silicon clathrate frameworks II and VIII
• Spin-phonon scattering-induced low thermal conductivity in a van der Waals layered ferromagnet Cr${}_2$Si${}_2$Te${}_6$
• Doping and temperature dependence of electron spectrum and quasiparticle dispersion in doped bilayer cuprates
• Hopping Processes Explain T-linear Rise of Thermal Conductivity in Thermoelectric Clathrates above the Plateau
• Interacting Dipoles in Type-I Clathrates: Why Glass-like though Crystal?
• Anharmonic phonon renormalization and thermal transport in the type-I Ba${}_8$Ga${}_{16}$Sn${}_{30}$ clathrate from first principles
• Pressure-induced isostructural phase transition of metal-doped silicon clathrates
• Thermal conductivity in intermetallic clathrates: A first principles perspective
• NMR experiments and electronic structure calculations in type-I BaAlGe clathrates
• Ab initio computational study on the lattice thermal conductivity of Zintl clathrates [Si${}_{19}$P${}_4$]Cl${}_4$ and Na${}_4$[Al${}_4$Si${}_{19}$]
• Pressure induced amorphization and collapse of magnetic order in type-I clathrate Eu8Ga16Ge30
• Anharmonic lattice dynamics and thermal transport in type-I inorganic clathrates
• Glass-like Thermal-Transport in Symmetry-Broken Clathrates
• Anomalous infrared spectra of hybridized phonons in type-I clathrate Ba${}_8$Ga${}_{16}$Ge${}_{30}$
• Occupational Disorder as the Origin of Flattening of the Acoustic Phonon Branches in the Clathrate Ba${}_8$Ga${}_{16}$Ge${}_{30}$
• Electrical and Thermal Transport Properties of the beta-Pyrochlore Oxide CsW2O6
• Incipient ionic conductors: Ion-constrained lattices achieving superionic-like thermal conductivity by extreme anharmonicity
• Nanostructured clathrates and clathrate-based nanocomposites