109 citations · 218 across the 7 of their papers we have counts for
7 papers
Phonon scattering and vibrational localization in 2D embedded nanoparticle composites
Ongira Chowdhury, Joseph P. Feser
In this work, a Landauer approach enabled by the Frequency Domain Perfectly Matched Layer Method (FDPML) is used to study phonon transport in a series of large 2D domains with rand…
Predictive design and experimental realization of InAs/GaAs superlattices with tailored thermal conductivity
J. Carrete, B. Vermeersch, L. Thumfart +7
We demonstrate an ab-initio predictive approach to computing the thermal conductivity () of InAs/GaAs superlattices (SLs) of varying period, thickness, and composition. Our new…
Thermal Transport Across Metal Silicide-Silicon Interfaces: First-Principles Calculations and Green's Function Transport Simulations
Sridhar Sadasivam, Ning Ye, James Charles +4
In this work, we use a combination of first-principles calculations under the density functional theory framework and heat transport simulations using the atomistic Green's functio…
Thermal Transport Across Metal Silicide-Silicon Interfaces: An Experimental Comparison between Epitaxial and Non-epitaxial Interfaces
Ning Ye, Joseph P Feser, Sridhar Sadasivam +4
Silicides are used extensively in nano- and microdevices due to their low electrical resistivity, low contact resistance to silicon, and their process compatibility. In this work,…
Probing the validity of the diffuse mismatch model for phonons using atomistic simulations
Rohit R. Kakodkar, Joseph P Feser
Due to it's simplicity the diffuse mismatch model (DMM) remains a popular description of phonon transmission across solid-solid boundaries. However, it remains unclear in which sit…
A framework for solving atomistic phonon-structure scattering problems in the frequency domain using Perfectly Matched Layer boundaries
Rohit R. Kakodkar, Joseph P. Feser
We present a numerical approach to the solution of elastic phonon scattering problems based on a frequency domain decomposition of the atomistic equations of motion and the use of…
Compositionally-modulated Si1-xGex multilayers with cross-plane thermal conductivity below the thin-film alloy limit
Peixuan Chen, N. A. Katcho, J. P. Feser +6
We describe epitaxial Ge/Si multilayers with cross-plane thermal conductivities which can be systematically reduced to exceptionally low values, as compared both with bulk and thin…