Journal of Applied Physics
Articles in this Issue
Effect of a uniaxial strain on cubic semiconductors: Toward control of the hole spin–orbit interaction
In cubic semiconductors such as GaAs under uniaxial strain, we determine the spin–orbit equivalent magnetic field acting on hole spins. This field is the sum of a Dresselhaus-like field caused by the...
Thermal response functions and second sound in graphene
The propagation of second sound, and more broadly the ballistic transport of heat, is of central importance in heat dissipation from electronic devices at very short length and time scales. Recently,...
Irradiation effects of filtered beams of ionic liquid ion sources on semiconductor materials
Ionic liquid ion sources (ILIS) provide access to alternative ion chemistries for focused ion beam processing and surface modification. Previous literature has reported on the irradiation effects of f...
Diffusion of contact metals in GaN/AlGaN stacks
While attempting to form tantalum-based shallow ohmic contacts to the two-dimensional electron gas (2DEG) confined in GaN/AlGaN heterostructures, it was noticed that a parasitic channel in a few hundr...
Ramp-release experiments for strength measurements: Strain-rate dependence
This paper presents an enhanced analysis method for investigating material properties at high strain rates, extending the capability of established experimental techniques to gain more information. Th...
On Drude metallicity of 2- <i>Pmmn</i> borophene and possible emergence of bad metal
The metallic character of 2-Pmmn borophene is discussed within the minimal model Hamiltonian, which is derived from the ab initio band structure. Working on Boltzmann’s transport equation, which is so...
In-plane thermal conductivity measurement of nanoscale thin films via frequency-domain thermoreflectance with multilayer stacking
Nanoscale thin films are a fundamental building block of modern electronic and spintronic devices, and accurate characterization of their heat transport properties is essential for reliable design. Ho...
The completed High-Low method for interface state analysis in MOS capacitors
Interface state densities, DIT, in metal–oxide–semiconductor (MOS) capacitors are rarely reported in the accumulation energy range. It is recognized that the determination of DIT in accumulation is fu...
Giant number fluctuations in fire-ant collectives
Many active systems comprised of self-propelled particles, including living systems, are known to undergo collective motion and exhibit giant number fluctuations (GNFs). Fire ants at sufficiently high...
Optical diagnosis of the N2–O2 ratio effect on mode transition and asymmetric suppression in helicon plasma
The effect of N2–O2 ratio on mode transition and asymmetric suppression behavior in helicon plasma discharge was systematically investigated by using optical emission spectroscopy. N2–O2 ratio ranging...
Experimental study on nanosecond pulsed discharge mode transition in supersonic flow with needle-to-plate electrodes
Magnetohydrodynamics (MHD) provides a new solution for addressing the total temperature rise issue in hypersonic wind tunnels, in which generating a stable and uniform conductive fluid is the key chal...
Enhanced spin–orbit torque efficiency via interface engineering in BiSb/X/CoFeB (X = Ge, NiAl, NiFeGe) topological heterostructures
Interlayer engineering is crucial for achieving efficient spin–orbit torque (SOT) generation in topological insulator (TI)/ferromagnet-based heterostructures. In this work, we investigated the impact...
Creation and motion of antiferromagnetic skyrmions by edge manipulation
Magnetic racetrack architectures that use topological magnetic particles to store information are one of the most promising concepts for future storage applications. Antiferromagnetic racetracks are p...
Nonlinear electrical transport near the metal–insulator transition in V4O7 thin films
Nonlinear electrical transport associated with correlated electronic states has been widely investigated in transition-metal oxides near metal–insulator transitions. Here, we investigate nonlinear tra...
Diffusion-driven formation of current blocking layers in GaN using Mg-doped spin-on glass-based technique
This work reports the first demonstration of magnesium (Mg)-doped spin-on-glass based diffusion to achieve selective-area current-blocking layers in gallium nitride (GaN). We employed an oxygen-assist...
Resistive switching in tunable Pt–C granular metals
The charge-transport properties of nanogranular metals, comprising arrays of metallic nanoparticles embedded in an insulating matrix, are governed by the average tunneling conductance g between neighb...
Fluororesin coating for enhancing the ambient stability of DAST crystals in terahertz wave emission
4-N,N-dimethylamino-4′-N′-methyl-stilbazolium tosylate (DAST) crystals, as organic nonlinear optical crystals, are excellent sources of terahertz radiation due to their high second-order nonlinear coe...
Cryogenic temperature sensing characteristics of surface acoustic wave resonator with high Q based on AlScN film
In cryogenic environments such as superconductivity and aerospace applications, surface acoustic wave (SAW) sensors offer significant advantages for low-temperature sensing due to their passive and wi...
Optimization of porous GaN distributed Bragg reflectors via low-concentration oxalic acid electrochemical etching
Distributed Bragg reflectors (DBRs) are essential components of resonant cavities in optoelectronic devices and have proven difficult to manufacture in the nitride epitaxial system due to a lack of la...
Fit-free optical determination of electronic thermalization time in nematic iron-based superconductors
We present a nematic response function model (NRFM) for fit-free direct extraction of the characteristic time of ultrafast electronic thermalization in iron-based superconductors, materials with elect...
A physics-assisted deep learning method for high-fidelity breast microwave image reconstruction in electromagnetic inverse scattering
Microwave imaging is a promising next-generation breast imaging technology. At present, cutting-edge microwave image reconstruction methods based on deep learning (such as various variants of convolut...
Nonlinear dynamic effects of humidity and pre-stretch on the anisotropic dielectric elastomer minimum energy structure
Humidity is an important environmental factor affecting dielectric elastomer systems. However, its influence on nonlinear dynamics remains poorly understood, particularly in anisotropic dielectric ela...
Evolution of defect states in C2H2-doped GaN:C studied by optical deep-level transient spectroscopy
Carbon-doped GaN (GaN:C) is widely used as a semi-insulating buffer layer in GaN-based power devices. Although the electrical properties of GaN:C grown by carbon autodoping have been extensively studi...
Phase-selective sputter epitaxy of <i>δ</i> -NbN, <i>γ</i> -Nb4N3, and <i>β</i> -Nb2N on atomically flat AlN
We report the phase-selective epitaxy of δ-NbN, γ-Nb4N3, and β-Nb2N thin films on AlN/sapphire templates by sputtering. Structural analysis revealed coherent epitaxial growth with sharp x-ray diffract...
Temperature-driven charge transport in annealed CdSe/CdS nanoplatelets film
This work presents a comprehensive investigation into the temperature-dependent thermally stimulated conductivity and photoconductivity of vacuum-annealed thin films based on core–shell CdSe/CdS nanop...