... volume fractions and superlattice periods. Details of the nonequilibrium energy exchange between optical and acoustic phonons that originate from the mismatch of phonon spectra in silicon and germanium are delineated for the first time. Conditions are identified for which this effect can produce...

... value of unity. In heterogeneous bulk materials, the transmission function is reduced significantly due to the junction of dissimilar materials. eigenvalues and eigenfunctions elemental semiconductors germanium Green's function methods phonons silicon phonon Green’s function polarization...

... germanium heat transfer interface phenomena molecular dynamics method phonons silicon thermal conductivity thermal boundary conductance phonon classical limit silicon germanium diffuse mismatch model molecular dynamics The phonon thermal boundary conductance between two solids...

.... , and Phillpot , S. R. , 2003 , “ Multiscale Simulation of Phonon Transport in Superlattices ,” J. Appl. Phys. 0021-8979 , 93 , pp. 5377 – 5387 . 10.1063/1.1561601 02 06 2009 16 04 2010 27 07 2010 27 07 2010 germanium heat transfer molecular dynamics method silicon...

...-assembly is an emerging epitaxial technology to design ultradense arrays of germanium QDs in silicon for many promising electronic and photonic applications such as quantum computing, where accurate QD positioning is required. We theoretically demonstrate that high-density three-dimensional (3D) arrays...

... density functional theory elemental semiconductors germanium Ge-Si alloys molecular dynamics method nanostructured materials silicon thermal conductivity ab initio molecular dynamics thermal energy transport nanoscale Moore’s law predicted that the number of transistors on a chip...

... that the inclusion of scattering effects reduces the electrical conductivity leading to a significant reduction in the power factor ( S 2 σ ). silicon germanium elemental semiconductors semiconductor thin films Seebeck effect Green's function methods electron-phonon interactions semiconductor...

...W. Zhang; T. S. Fisher; N. Mingo An atomistic Green’s function method is developed to simulate phonon transport across a strained germanium (or silicon) thin film between two semi-infinite silicon (or germanium) contacts. A plane-wave formulation is employed to handle the translational symmetry...

...J. D. Chung, Assistant Professor; A. J. H. McGaughey, Graduate Student; M. Kaviany, Professor, ASME Fellow The role of phonon dispersion in the prediction of the thermal conductivity of germanium between temperatures of 2 K and 1000 K is investigated using the Holland approach. If no dispersion...