Journal of Applied Physics
Articles in this Issue
High-pressure structural stability of compositionally complex pyrochlore oxides
Compositionally complex oxides (CCOs) present immense potential for tailoring physical properties across a broad compositional landscape. Understanding their structural stability and tunability, parti...
Nonlinear wave decay of the rotating spoke oscillation in a partially magnetized plasma
The rotating spoke oscillation is observed in experiments on a planar direct-current magnetron discharge. Previous studies on the same device found that the spoke rotation direction can reverse when t...
Phonon studies of the phase transition sequence in antiferroelectric single crystal of Pb(Hf0.83Sn0.17)O3
The sequence of phase transitions in PbHf0.83Sn0.17O3 has been studied by THz, far infrared, and Raman spectroscopies, revealing the complementary behavior of both polar and non-polar phonons and thei...
Tunable phononic frequency combs in curved piezoelectric micromachined ultrasound transducers enabled by 2:1 internal resonance and a ferroelectric thin film
Phononic frequency combs have been demonstrated in various MEMS resonators through intermodal coupling, analogous to their optical counterparts. This work presents the generation of tunable frequency...
Particle simulation of streamer discharges on DC transmission conductors with the presence of multiple raindrops
Streamer discharges on conductors in the presence of multiple raindrops are investigated through particle-in-cell simulations with Monte Carlo collisions included. Three discharge models are proposed,...
Identification of dimensionless parameters in Rayleigh–Bénard convection through regression neural network
We combine advances in computational fluid dynamics and neural networks to develop a tool to study the dynamics of industrial and geophysical flows. Rayleigh–Bénard convection (RBC) is characterized b...
Quantum-dot single-photon source based on a two-dimensional photonic crystal nanocavity transfer-printed on a Si wire waveguide
We report a quantum-dot single-photon source (QD SPS) with a two-dimensional photonic crystal (2D PhC) nanocavity hybrid-integrated on a low-loss hydrogenated amorphous silicon waveguide via transfer...
Numerical analysis of electromagnetic behavior in D-shaped coils for toroidal field magnet
In the current emerging research of compact tokamak devices, it is important to study the electromagnetic response of D-shaped coils in the toroidal field (TF) magnet. In this paper, a numerical elect...
Experimental and theoretical investigation of nonradiative broadening excitation spectra of GaAs/AlGaAs quantum wells under magnetic field in Faraday geometry
Exciton excited states in the quantum well are studied by measuring reflectance spectra with additional tunable laser excitation. The nonradiative broadening of the ground exciton state in the reflect...
Polarization-based dehazing algorithm under dense hazy conditions
The scattering of light induced by hazy conditions severely degrades imaging quality, leading to reduced contrast, loss of detail, and blurring. These issues present severe challenges to critical fiel...
Study on the similarity laws for capacitively coupled radio frequency discharges across pressure and dimension scales
Capacitive radio frequency (rf) plasma sources designed with various dimensions and gas pressure conditions have been widely utilized for etching and thin film deposition during chip fabrication in th...
Adhesion at fractal interfaces: A theoretical framework for multiscale contact
Adhesive interactions at contact interfaces are strongly influenced by surface roughness spanning multiple length scales. In many contact-mode microsystems, the surface topography commonly exhibits fr...
Experimental and simulation investigations on the impact of non-uniform GaSb cells temperature in thermophotovoltaic systems
This study examines the effect of the non-uniform temperature distribution on the performance of GaSb thermophotovoltaic (TPV) cells under high radiation temperatures. Previous studies have primarily...
Design of oxide-based tunnel FETs using amorphous IGZO and p-type oxide semiconductors
Thin-film transistors based on oxide semiconductors, such as amorphous InGaZnO4 (a-IGZO), are widely used in edge devices owing to their low power consumption. However, the fundamental limitation of t...
X-ray diffraction study of Ge islands on Si(001) grown by aspect ratio trapping
Recently, efficient threading dislocation filtering was demonstrated for Ge on Si by utilizing an “aspect ratio trapping” technique, in which Ge is selectively grown in isolated SiO2 trenches or holes...
Enhancing VLF communication via performance-optimized magnetoelectric antenna arrays
Magnetoelectric (ME) antennas typically exhibit high-quality (Q) resonance, which fundamentally limits their bandwidth. This constraint hinders their effectiveness in very-low-frequency (VLF) communic...
Theoretical investigation of interface atomic structure of graphene on NiFe alloy substrate
The implementation of graphene as tunnel barriers in tunneling magnetoresistance devices attracts attention. So far, two processes have been proposed to fabricate graphene/NiFe alloy interfaces. One i...
First-principles investigation of the relationship between laser irradiation intensity and non-thermal melting of <i>α</i>-quartz
Non-thermal melting induced by femtosecond laser irradiation has been widely studied. Previous simulations typically relied on thermally equilibrated electronic systems within the Born–Oppenheimer app...
Magnetic field-induced chiral soliton lattice in the bulk magnetoelectric helimagnet Cu2OSeO3
Chiral soliton lattices (CSLs) are anharmonic magnetic structures typically found in uniaxial chiral magnets. In this study, we report the observation of CSL in bulk Cu2OSeO3, a chiral insulator known...
The origin of large low-temperature specific heat in an Er–Cu–Ga magnetic regenerator material
In this work, the low-temperature volumetric specific heat, magnetic structure, and phase transition of the ErCu0.92Ga0.08 intermetallic alloy are investigated. It is found that ErCu0.92Ga0.08 exhibit...
Temperature dependence of specific heat capacity of nanostructures via neuroevolution machine-learned potential
In this study, lattice dynamics calculations based on the Neuroevolution Machine-learned Potential (NEP) were performed for three types of silicon nanostructures: thin films, nanowires, and quantum do...
Size effect on phonon Knudsen minimum in three-dimensional graphite ribbons
Phonon Poiseuille flow has been recently demonstrated in graphite ribbons via both theory and experiment through super-ballistic temperature-dependent thermal conductivity. However, the super-ballisti...
Strain-tunable effective mass and magnetic phase transition in two-dimensional NiI2 monolayer
Recently, extensive efforts have been directed toward the exploration of two-dimensional (2D) van der Waals ferromagnets. In this study, we systematically investigate the effects of in-plane homogeneo...
Enhanced near ultraviolet (UV) photodetection using PLD-grown ZnO/Ga2O3/ZnO epistructure on n-Si (100) substrate
Advancement of room-temperature ultraviolet (UV) and near-UV photodetectors is crucial for the realization of next-generation optoelectronic interconnects. Semiconductors namely zinc oxide (ZnO) and g...
Influence of pulse duration on plasma chemistry and thin film growth of plasmonic titanium nitride deposited by constant-current regulated HIPIMS
This study documents the results of an investigation into the effect of pulse duration within constant-current reactive high power impulse magnetron sputtering of titanium discharges, specifically inv...