Journal of Applied Physics
Articles in this Issue
Fast Mueller matrix infrared ellipsometry using quantum cascade laser: Applications in material characterization
We present a high-speed infrared spectroscopic ellipsometer using a tunable quantum cascade laser (QCL), leveraging its high brightness for potential in situ and in-line monitoring applications. The i...
Scattering channels in high temperature terahertz quantum cascade structures
The effects of scattering channels in high operating temperature terahertz quantum cascade laser structures are studied. The electron transport is calculated using a density matrix Monte Carlo method,...
Exploring the impedance characteristics in an inverted radio-frequency capacitively coupled plasma discharge due to intense boundary emission
Electron emission from boundaries is ubiquitous in radio-frequency capacitively coupled plasmas (RF-CCPs) and can exert a significant influence on discharge characteristics. In this work, particle-in-...
Electronic band structure, band-to-band transitions, and anisotropic dielectric functions of orthorhombic NdGaO3
A set of ultrawide bandgap single-crystal NdGaO3 samples cut with crystallographic surface orientations (001), (101), and (110) are investigated by using generalized spectroscopic ellipsometry. We rep...
Fundamental thermovisco mechanical interactions governing the acoustic response of laser-excited nanoparticles
In this work, we investigate the thermoacoustic generation and propagation of spherical waves in a viscous fluid induced by a laser-heated spherical particle. Periodic laser excitation gives rise to t...
Solid solution-induced relaxation and enhanced dielectric energy storage capacity in BaTiO3 ceramics
BaTiO 3 (BT)-based ceramics have emerged as promising contenders for dielectric energy storage applications owing to their excellent thermal stability and favorable dielectric characteristics. Neverth...
Impedance spectroscopy as a diagnostic tool for charge transport and interface limitations in advanced silicon solar cells
Advanced silicon solar cell technologies employ multilayer architectures and offer significant potential to improve power conversion efficiency. However, fabrication-induced nonidealities often lead t...
Piezoelectrically induced electron detrapping model for mechanoluminescent semiconductors: A unified theoretical and experimental perspective
Mechanoluminescence (ML) in semiconductors originates from the coupled interaction between mechanical stress, internal polarization fields, and trapped charge carriers. Rather than proposing a new mec...
Phase field study of exchange coupling of hard/soft ferrite on magnetic permeability
Effective modulation of magnetic permeability plays a vital role in the development of high-performance inductors. Here, phase field simulations of hard/soft ferrite composites (BaM/NiZn) clarify how...
Coexistence and interplay of Fabry–Pérot and twin Friedrich–Wintgen bound states in the continuum in a plasmonic double T-cavity
Bound states in the continuum (BICs) are typically investigated in terms of distinct formation mechanisms, such as symmetry-protected (SP), Friedrich–Wintgen (FW), or Fabry–Pérot (FP) BICs. However, t...
Field driven metal–insulator transition in rhombohedral bismuth and arsenic crystals
Metal to insulator transition (MIT) is accompanied by huge changes in physical responses by the control and tuning of experimental parameters like doping, pressure, chemical composition, and magnetic...
Tunable graphene-coated refractory nitride nanomatryoshka in C-151 dye for improved solar absorption
Plasmonic nanostructures provide an effective route to enhance light–matter interaction in advanced photovoltaic architectures. This work reports a numerical analysis of localized surface plasmon reso...
Fabrication of high-quality large-scale ultrathin and narrow YBa2Cu3O7−δ superconducting meander wire array
Large-scale quantum devices based on high-temperature superconductors and other sensitive materials are promising for next-generation quantum sensing and imaging, yet their practical realization is hi...
Understanding the origin of circularly polarized light emission induced by coupling to two-dimensional chiral arrays using different functional coatings: Dielectric vs plasmonic
Enabling chiral light emission from arbitrary emitters by using their coupling to two-dimensional (2D) chiral arrays offers an efficient and flexible strategy to take advantage of the best suited emit...
Near-field mapping of interference and propagation of surface plasmon polaritons in gold nanoislands
The nanoscale behavior of surface plasmon polaritons (SPPs) in gold nanostructures is directly visualized and characterized, revealing their complex interference, dispersion, and coupling dynamics. We...
Fidelity and quantum geometry approach to Dirac exceptional points in diamond nitrogen-vacancy centers
Dirac exceptional points (EPs) represent a novel class of non-Hermitian singularities that, unlike conventional EPs, reside entirely within the parity-time unbroken phase and exhibit linear energy dis...
The effect of interfacial intermixing on magnetization switching in Tb/Fe multilayers
Femtosecond-laser–induced magnetization reversal triggered by linearly polarized light has been widely explored in alloys and thin-film systems. To further exploit interfacial effects, we employ a sem...
Analysis of <i>in situ</i> electrochemical characterization methods for porous GaN distributed Bragg reflectors
The applicability of porous gallium nitride (GaN) distributed Bragg reflectors (DBRs) is currently limited by nonuniformity and a lack of electrochemical etching (ECE) control. This work presents a de...
Conductance anomalies in constriction-type superconducting Josephson junctions induced by hydrogen impurities
To microscopically investigate the influence of hydrogen on transport properties in superconductors, we studied the current–voltage characteristics of hydrogen-absorbed niobium (Nb) and hydrogen-adsor...
Effect of Fe doping on the structural, morphological, optical, electrical, and photocatalytic properties of ZnO thin films deposited via spray pyrolysis
Fe-doped ZnO thin films were synthesized onto glass substrates via spray pyrolysis, and the effects of Fe concentration from 0% to 6% on their structural, morphological, optical, electrical, and photo...
Drift-diffusion model of self-biased 4H-SiC Schottky photodiodes for violet–ultraviolet emitting scintillator readout
4H-SiC is identified as a wide-bandgap semiconductor material for light readout from high speed, ultraviolet (UV) emitting scintillating materials that can operate in harsh environments, at high tempe...
Orbital-driven field-free switching in low-symmetry van der Waals heterostructures
We develop a microscopic model for orbital-driven, field-free magnetization switching in low-symmetry van der Waals heterostructures. Using minimal tight-binding models for a 1Td transition metal dich...
Optical-mode-dominated thermal conductivity in monolayer Ti2SiCO2
Understanding phonon transport in two-dimensional materials with complex lattice dynamics is essential for their integration into electronic and optoelectronic devices. Using the Boltzmann transport e...
Influence of cadmium ion doping on luminescence of CsPbBr3 single crystals
The effect of impurity doping with cadmium ions on the luminescent properties of CsPbBr3 perovskite single crystals has been investigated. The luminescence spectra of pure and Cd-activated CsPbBr3 cry...
Metasurface-based all-optical diffractive convolutional neural networks
The escalating energy demands and parallel-processing bottlenecks of electronic neural networks underscore the need for alternative computing paradigms. Optical neural networks, capitalizing on the in...