696 citations · 3.1k across the 67 of their papers we have counts for
27 papers · 1 filter
Characterization of ultrathin nickel films deposited by thermal laser evaporation
David S. Catherall, Yifei Yan, Finley B. Donachie +2
Thermal laser evaporation is a physical vapor deposition technique of increasing interest because of its ability to evaporate essentially any solid element, even the most refractor…
Directional atomic layer etching of MgO-doped lithium niobate using Br-based plasma
Ivy I. Chen, Mariya Ezzy, Emily Hsue-Chi Shi +8
Lithium niobate (LiNbO, LN) is a nonlinear optical material of high interest for integrated photonics with applications ranging from optical communications to quantum informati…
Atomic layer etching of InGaAs using sequential exposures of atomic hydrogen and oxygen gas
Mete M. Bayrak, Anthony J. Ardizzi, Sadhvikas Addamane +2
The high frequency performance and yield of III-V semiconductor devices such as InP HEMTs is negatively impacted by subsurface etch damage and non-uniform etch depth over the wafer…
Atomic layer etching of niobium nitride using sequential exposures of O and H/SF plasmas
Azmain A. Hossain, Sela Murphy, David S. Catherall +2
Niobium nitride (NbN) is a metallic superconductor that is widely used for superconducting electronics due to its high transition temperature () and kinetic inductance. Proces…
Valleytronics and negative differential resistance in cubic boron nitride: a first-principles study
Benjamin Hatanpää, Austin J. Minnich
Cubic boron nitride (c-BN) is an ultrawide-bandgap semiconductor of significant interest for high-frequency and high-power electronics applications owing to its high saturation dri…
Hot electron diffusion, microwave noise, and piezoresistivity in Si from first principles
Benjamin Hatanpää, Austin J. Minnich
Ab-initio calculations of charge transport properties in materials without adjustable parameters have provided microscopic insights into electron-phonon interactions which govern c…
Hot hole transport and noise phenomena in silicon at cryogenic temperatures from first principles
David S. Catherall, Austin J. Minnich
The transport properties of hot holes in silicon at cryogenic temperatures exhibit several anomalous features, including the emergence of two distinct saturated drift velocity regi…
Charge transport in BAs and the role of two-phonon scattering
Iretomiwa Esho, Austin J. Minnich
The semiconductor BAs has drawn significant interest due to experimental reports of simultaneous high thermal conductivity and ambipolar charge mobility. The \textit{ab~initio} pre…
Transport and noise of hot electrons in GaAs using a semi-analytical model of two-phonon polar optical phonon scattering
Jiace Sun, Austin J. Minnich
Recent ab-initio studies of electron transport in GaAs have reported that electron-phonon (e-ph) interactions beyond the lowest order play a fundamental role in charge transport an…
Two-phonon scattering in non-polar semiconductors: a first-principles study of warm electron transport in Si
Benjamin Hatanpää, Alexander Y. Choi, Peishi S. Cheng +1
The ab-initio theory of charge transport in semiconductors typically employs the lowest-order perturbation theory in which electrons interact with one phonon (1ph). This theory is…
High-field charge transport and noise in p-Si from first principles
David Catherall, Austin Minnich
The parameter-free computation of charge transport properties of semiconductors is now routine owing to advances in the ab-initio description of the electron-phonon interaction. Ma…
High-field transport and hot electron noise in GaAs from first principles: role of two-phonon scattering
Peishi S. Cheng, Jiace Sun, Shi-Ning Sun +2
High-field charge transport in semiconductors is of fundamental interest and practical importance. While the \textit{ab initio} treatment of low-field transport is well-developed,…
Origin of high thermal conductivity in disentangled ultra-high molecular weight polyethylene films: ballistic phonons within enlarged crystals
Taeyong Kim, Stavros X. Drakopoulos, Sara Ronca +1
The thermal transport properties of oriented polymers are of fundamental and practical interest. High thermal conductivities ( WmK) have recently been rep…
A coupled cluster framework for electrons and phonons
Alec F. White, Yang Gao, Austin J. Minnich +1
We describe a coupled cluster framework for coupled systems of electrons and phonons. Neutral and charged excitations are accessed via the equation-of-motion version of the theory.…
Electronic noise of warm electrons in semiconductors from first-principles
Alexander Y. Choi, Peishi Cheng, Benjamin Hatanpaa +1
The ab-initio theory of low-field electronic transport properties such as carrier mobility in semiconductors is well-established. However, an equivalent treatment of electronic flu…
Origin of micron-scale propagation lengths of heat-carrying acoustic excitations in amorphous silicon
Taeyong Kim, Jaeyun Moon, Austin J. Minnich
The heat-carrying acoustic excitations of amorphous silicon are of interest because their mean free paths may approach micron scales at room temperature. Despite extensive investig…
Electronic structure of bulk manganese oxide and nickel oxide from coupled cluster theory
Yang Gao, Qiming Sun, Jason M. Yu +5
We describe the ground- and excited-state electronic structure of bulk MnO and NiO, two prototypical correlated electron materials, using coupled cluster theory with single and dou…
Experimental demonstration of a generalized Fourier's Law for non-diffusive thermal transport
Chengyun Hua, Lucas Lindsay, Xiangwen Chen +1
Phonon heat conduction over length scales comparable to their mean free paths is a topic of considerable interest for basic science and thermal management technologies. Although th…
Spatial-Temporal Imaging of Anisotropic Photocarrier Dynamics in Black Phosphorus
Bolin Liao, Huan Zhao, Ebrahim Najafi +6
As an emerging single elemental layered material with a low symmetry in-plane crystal lattice, black phosphorus (BP) has attracted significant research interest owing to its unique…
Dynamics of Photo-excited Hot Carriers in Hydrogenated Amorphous Silicon Imaged by 4D Electron Microscopy
Bolin Liao, Ebrahim Najafi, Heng Li +2
The dynamics of charge carriers in amorphous semiconductors fundamentally differ from those in crystalline semiconductors due to the lack of long-range order and the high defect de…
Intrinsic localized mode and low thermal conductivity of PbSe
Nina Shulumba, Olle Hellman, Austin J. Minnich
Lead chalcogenides such as PbS, PbSe, and PbTe are of interest for their exceptional thermoelectric properties and strongly anharmonic lattice dynamics. Although PbTe has received…
The Role of Thermalizing and Non-thermalizing Walls in Phonon Heat Conduction along Thin Films
Navaneetha K. Ravichandran, Austin J. Minnich
Phonon boundary scattering is typically treated using the Fuchs-Sondheimer theory, which assumes that phonons are thermalized to the local temperature at the boundary. However, whe…
Heat conduction in multifunctional nanotrusses studied using Boltzmann transport equation
Nicholas G. Dou, Austin J. Minnich
Materials that possess low density, low thermal conductivity, and high stiffness are desirable for engineering applications, but most materials cannot realize these properties simu…
The Best Nanoparticle Size Distribution for Minimum Thermal Conductivity
Hang Zhang, Austin J. Minnich
Which sizes of nanoparticles embedded in a crystalline solid yield the lowest thermal conductivity? Nanoparticles have long been demonstrated to reduce the thermal conductivity of…