Phonon dynamics in type-VIII silicon clathrates: Beyond the rattler concept

Chemistry

• Acoustic Phonon 27%
• Alkaline Earth Metal 31%
• Band Gap 11%
• Clathrate 71%
• Debye Temperature 23%
• Density Functional Theory 9%
• Disorder 13%
• Energy 15%
• Filler 54%
• Lattice Dynamics 23%
• Phonon 71%
• Reduction 7%
• Thermal Conductivity 45%
• Velocity 13%

Engineering & Materials Science

• Acoustics 17%
• Atoms 10%
• Bandwidth 6%
• Crystalline materials 11%
• Density functional theory 15%
• Earth (planet) 8%
• Energy gap 12%
• Fillers 40%
• Glass 8%
• Lattice vibrations 19%
• Phonons 100%
• Silicon 50%
• Thermal conductivity 28%

Physics & Astronomy

• acoustics 12%
• atoms 5%
• clathrates 82%
• density functional theory 8%
• disorders 8%
• energy 6%
• fillers 41%
• glass 6%
• group velocity 10%
• insertion 10%
• phonons 43%
• silicon 34%
• specific heat 8%
• thermal conductivity 24%