Journal of Applied Physics
Articles in this Issue
Artificial neural network assisted spectroscopic ellipsometry data analysis of hydrogenated amorphous silicon thin films
Spectroscopic ellipsometry data analysis is typically done with an iterative least squares regression process. It can be resource intensive to generate structural and optical models with good initial...
Topological effect design for enhancing solidly mounted resonators performance
Bulk acoustic wave (BAW) filters are essential in 5G wireless communication yet suffer from limited spectral selectivity near band edges. Here, we propose a topologically engineered acoustic reflector...
P-type conductivity in GaN:Be epitaxial layers
Electron transport properties of Be-doped heteroepitaxial GaN layers grown by metalorganic vapor phase epitaxy were investigated by means of temperature-dependent Hall effect measurements. The Be conc...
Phase transitions and relaxor behavior of lead-free ferroelectric bismuth potassium titanate
The phase transition behavior of relaxor ferroelectric Bi1/2K1/2TiO3 (BKT) is investigated in ceramic form based on synchrotron radiation x-ray diffraction (SR-XRD) measurements and dielectric measure...
Role of irreducible occupancy sites on thermoelectric performance of Te-doped BiSbSe3
Doping can effectively modulate electron and phonon transport. However, the impact of symmetry-governed irreducible site occupancy remains unclear. In this work, we theoretically investigate the therm...
Unraveling low thermal expansion of CrBO3 via atomic scale analysis: Flexible CrO6 octahedron vs rigid BO3 triangle group
Borates are pivotal in optical technology owing to their exceptional optical performance, yet their thermal expansion property, critical for optical device stability, remains inadequately understood a...
Advanced optical characterization of multilayer lead zirconate titanate films: A spectroscopic ellipsometry approach
The intricate preparation processes associated with multilayer Lead Zirconate Titanate (PZT) films may induce variations in optical properties compared to their single-layer counterparts. In this work...
Effects of hydrogen on sputter-deposited boron carbide films
Sputter deposition of B4C films requires precise control over the microstructure and the nucleation and growth of nodular defects. Here, we study the properties of B4C films deposited with substrate h...
3D printing of electrostatic actuation and adhesion devices: Future opportunities and challenges
In recent years, electrostatic devices have attracted considerable attention due to their broad applications in actuators, sensors, and adhesion systems. Traditionally, these devices are fabricated th...
Electric field sensing via Rydberg electromagnetically induced transparency using Zeeman and Stark effects
Rydberg-assisted atomic electrometry with thermal vapors offers a promising approach for detecting external electric fields. However, this technique presents significant challenges for measuring low f...
Electrothermal modeling of GaN high electron mobility transistors using a Monte Carlo-trained hybrid AI-thermal approach with microscopic physical insight
Self-heating significantly impacts the performance and reliability of GaN high electron mobility transistors, but capturing these effects with electrothermal Monte Carlo (MC) simulations is computatio...
Understanding the intercalation and rectification effects in gold supported graphene/PtSe2 heterostructure
In this work, we have performed an ab initio study of the structural, electronic, and electronic transport properties of the graphene/PtSe2 (G/PtSe2) heterobilayer in contact with the metallic Au(111...
Molecular simulation of subcritical crack growth under dry conditions in a model brittle glass
Subcritical crack growth can occur under a constant applied load below the threshold value for catastrophic failure, also known as static fatigue. Here, we report how a crack grows under a combination...
Dielectric polarization behavior of helical polypyrrole under electromagnetic fields
Polarization loss mechanism is a fundamental mechanism in electromagnetic wave-absorbing materials. However, previous studies on wave-absorbing materials predominantly focused on the impacts of atomic...
Recombination mode of extreme ultraviolet radiation in a lithium laser-produced plasma
This work provides new insights into the emission mechanisms of laser-produced lithium plasma in the extreme ultraviolet (EUV) spectral region, with important implications for the development of EUV l...
Equivalence of physical pressure and chemical pressure in the phase transformation of undiscovered Sb<i>x</i>Bi(1−<i>x</i>)ScO3 compound
A new approach based on a Clausius–Clapeyron-like equation was previously proposed to evaluate the equivalence of physical transformation pressure and chemical pressure and to search for new phase tra...
Effects of phonon confinement on electron transport in Si nanowire and armchair-edge graphene nanoribbon transistors: A dissipative quantum-transport study
Electronic transport in low-dimensional structures, such as thin bodies, nanosheets, nanoribbons and nanowires, is strongly affected by electron and phonon confinement, in addition to interface roughn...
Magnetic properties and regulation of layered material MnSiTe3
Two-dimensional (2D) magnetic materials possess a significant potential in non-volatile information storage and logic devices. MnSiTe3 has been an outstanding candidate for permanent magnet due to its...
Dual-polarized metalens based on Huygens’ metasurface
The fusion of lenses and antennas presents compelling advantages, including enhanced gain, reduced beam width, and improved directivity, making it highly suitable for applications in modern communicat...
Optical and structural requirements for x-ray distributed feedback lasing across a resonant thin film
The requirements for developing chip-scale distributed-feedback x-ray lasers were investigated to address the critical challenge of miniaturizing coherent short-wavelength laser sources. A central con...
Band alignment and electrical characterizations of a grafted Si/MgCdTe <i>p–i–n</i> heterojunction
Thin-film solar cells offer high power density and efficiency, making them attractive for terrestrial and space applications. Among these, cadmium telluride (CdTe) is a leading material due to its dir...
Influence of water depth on the underwater shaped charge jet formation characteristics and penetration effects
Underwater shaped charge jets are widely utilized due to their excellent penetration capabilities. However, investigating the formation and penetration mechanisms of shaped charge jets at different wa...
Terahertz ultra-broadband perfect absorption and absorption-to-transparency switching based on Brewster metasurfaces
In this paper, we propose a non-resonant tilted anisotropic Brewster metasurface to investigate its ultra-broadband absorption characteristics in the terahertz (THz) band. It consists of periodically...
Spectroscopic ellipsometry measurement and analysis of the optical constants of InAs/InAsSb and InGaAs/InAsSb superlattices and their bulk constituents
The optical constants of strain-balanced InAs/InAsSb and InGaAs/InAsSb superlattices and their constituents GaAs, GaSb, InAs, InSb, and InAsSb are measured using spectroscopic ellipsometry. An optical...
Strain-tunable magnetism in monolayer puckered pentagonal VTe2
The discovery of intrinsic two-dimensional (2D) magnetic materials has opened new avenues for exploring low-dimensional magnetism and spintronic functionalities. Among various control strategies, stra...