Journal of Applied Physics
Articles in this Issue
Magneto-optical properties of cobalt and Co3O4 thin films: Influence of microstructural properties
Two kinds of cobalt thin films, labeled smooth and nanostructured according to their surface properties, were deposited on a glass substrate by varying the deposition conditions during magnetron sputt...
Shear-lag modeling of surface-bonded omnidirectional shear horizontal wave transducer based on two thickness-poled piezoelectric half-rings
The shear horizontal (SH) wave in thin-walled structures has great potential in structural health monitoring since only a single SH0 mode exists when the excitation frequency is lower than the cut-off...
Artificial intelligence-assisted multi-scale phase field simulations for ferroelectrics: Cases for solid solution Ba<i>x</i>Sr1−<i>x</i>TiO3 and 2D ferroelectric In2Se3
Although the phase field method is a robust tool for theoretical studies of ferroelectrics, determining the parameters of the Helmholtz free energy in the phase-field model, particularly the Landau co...
Temperature effects on anisotropic mechanical properties of cast-grown β-Ga2O3
The production and application of beta-phase gallium oxide (β-Ga2O3) single crystals—an emerging ultrawide bandgap semiconductor—is frequently coupled with high temperature and mechanical load. Unders...
Dynamic ferroelectric hysteresis scaling of four-layered Aurivillius phase CaBi4Ti4O15 thin films
The hysteresis loop area represents the energy dissipation within one complete period of domain reversal, and it has been demonstrated that the scaling relation between ⟨A⟩ with electric field E and f...
Thermal considerations of multi-emitter quantum cascade laser platform for application in mid-infrared photonic integrated circuits
In this paper, research concerning the thermal management for multi-emitter Quantum Cascade Lasers (QCLs) is presented. Multiple QCL chips are integrated on one platform. Our study encompasses a compr...
Phonon softening mechanisms in power-dependent Raman spectroscopy of low-dimensional materials: The effects of thermal conductivity, absorption coefficients, and defects
Power-dependent Raman spectroscopy has been regularly used in material science, especially in low-dimensional materials. The origin of Raman mode frequency changes with increased laser power has not y...
Discovery of discretized differential equations from data: Benchmarking and application to a plasma system
This study presents and evaluates Phi Method, a novel data-driven algorithm designed to discover discretized differential equations governing dynamical systems from data. Phi Method employs a constrai...
Effects of metal, oxide, and hybrid metal-oxide interlayers on spin–orbit torque in BiSb topological insulator and magnetic interfaces
The charge-to-spin conversion efficiency at the interface between a topological insulator and a ferromagnetic (FM) layer can be enhanced by inserting an interlayer (ITL). However, the mechanism of thi...
Spin waves in Co2FeGe films
The dynamic magnetic properties of full Heusler alloy thin films of Co2FeGe, grown on MgO (001) substrates under different thermal conditions, were investigated. Brillouin light scattering and ferroma...
Focusing of airborne ultrasound emitted by a flexurally vibrating plate using a transmission mask with spatially designed holes
We propose a focusing method of intense midair ultrasound out of ultrasonic emission from a single flexurally vibrating plate partially covered with a purposely designed amplitude mask. Many applicati...
Effect of temperature on the electrical performance of GaN Schottky barrier impact ionization avalanche transit time diodes
This article investigates the effect of temperature on GaN Schottky barrier Impact Ionization Avalanche Transit Time diodes by Sentaurus TCAD simulations. The findings indicate that Thermal Field Emis...
Structural transformation of ZnO quantum dots to ZnO/ZnS core–shell quantum dots and fluorescence color shift from yellow to blue induced by interfacial sulfurization
In recent years, ZnO quantum dots (QDs) synthesized via solution-based methods have garnered significant attention due to their rich surface defects, which lead to strong yellow-green light emissions....
Realization of the square-root Dirac semimetal in electrical circuits
We implement the topological semimetal state generated by the square-root operation in electrical circuits. In this system, the energy bands intersect at finite energies, with the topological properti...
Color centers and crystal structural transformations induced by femtosecond laser writing in 4H-SiC
Silicon carbide (SiC), a wide-bandgap semiconductor, is gaining importance in quantum technologies due to its promising color centers. Among SiC polytypes, 4H-SiC stands out with its wide bandgap and...
Multilayer stackable grouped acoustic metamaterial with optional sound absorption performance
The control of noise pollution in the low-frequency domain with various spectrum ranges requires the development of a novel tunable sound absorbing material, and a multilayer stackable grouped acousti...
Investigation of surface and interface phonon polariton in nitrogen-implanted GaN epi-layers
In recent decades, gallium nitride (GaN) has garnered significant attention from researchers due to its diverse applications in microelectronics and optoelectronic devices. In this manuscript, using i...
Wide-field microwave magnetic field imaging with nitrogen-vacancy centers in diamond
Non-invasive imaging of microwave (MW) magnetic fields with microscale lateral resolution is pivotal for various applications, such as MW technologies and integrated circuit failure analysis. Diamond...
Non-destructive measurement of the charge transfer across LaMnO3/SrTiO3 interfaces
Local polarization and charge transfer at the interface between 7-unit cell-thick LaMnO3 (LMO) ultrathin films and substrates composed of Nb-doped (0.05 wt. %) and undoped SrTiO3 (STO) are examined by...
Coherent spin transport in a polyacetylene molecular wire
In this study, I theoretically investigated the conduction properties of polyacetylene molecular wires using the Landauer approach based on first-principles approximations. I clarified the influence o...
Electrical activities of sulfur dopants in GaAs introduced by self-assembled molecular monolayers
Self-assembled molecular monolayer doping remains as a research focus for its nature of being conformal, nondestructive, and self-limiting. However, the carrying molecules may contaminate the substrat...
Power dependence of electron paramagnetic resonance: Analytical solution of Landau–Lifshitz–Gilbert equation
The solutions of the Landau–Lifshitz–Gilbert (LLG) equation reveal nonlinear effects in electron spin dynamics. Here, the nonmonotonic power dependence of the electron paramagnetic resonance (EPR) sig...
Rapid zinc diffusion behaviors in lightly doped extended wavelength In0.83Ga0.17As focal plane arrays
Zinc diffusion behaviors in n type In0.83Ga0.17As epitaxial layers doped to 3.5 × 1015 cm−3 are investigated for the planar type extended wavelength In0.83Al0.17As/In0.83Ga0.17As focal plane arrays by...
Thermodynamic fidelity of generative models for Ising system
Machine learning has become a central technique for modeling in science and engineering, either complementing or as surrogates to physics-based models. Significant efforts have recently been devoted t...
Measurement of near-wall microparticle motion induced by evanescent-field radiation pressure
This study confirmed through experimental and theoretical investigations that considering the influences of the neighboring wall on the particle motion due to intermolecular, electrostatic, and hydrod...