Applied Physics Letters
Articles in this Issue
Raman analysis of anisotropic strain in semipolar (112¯2) AlN grown on m-plane sapphire
The anisotropic strain characteristics of semipolar (112¯2) AlN grown on m-plane sapphire were investigated by Raman spectroscopy and high-resolution x-ray diffraction. The Raman quasi-TO mode exhibit...
Thermodynamic scaling of coercive field in ferroelectric films: Single-domain and multi-domain switching competition
The scaling of the coercive field Ec with ferroelectric thickness d is critical to device miniaturization. Here, we integrate Thomas–Fermi screening self-consistently into the Landau–Ginzburg–Devonshi...
Light-induced polarization effect in SrTiO3
Optically modulating key material parameters, notably the polarization P or dielectric constant ε, offers a novel approach to enhancing the performance and functionality of electronic devices such as...
Shear-strain-dependent thermal conductivity of diamond explored via a machine learning potential
Diamond is regarded as a critical material for the thermal management of high-power electronics. However, the impact of shear strain, which is a prevalent deformation mode in complex stress fields, re...
Kinetically controlled crystallization via plant-derived additives boosts the efficiency of carbon-based perovskite solar cells exceeding 20%
Effectively controlling crystallization kinetics to obtain high-quality perovskite films with large grains and low defect density is a key strategy for fabricating high-performance hole transport laye...
An electrically driven terahertz metamaterial PIN modulator
A terahertz (THz) amplitude modulator based on a silicon p–i–n structure integrated with a planar metamaterial grating is experimentally demonstrated for free-space operation. Electrical modulation is...
Ferroelectric multi-stability and electrically switchable Rashba effect in few-layer M2CO2 (M = Ti, Zr, Hf)
Manipulating the interlayer stacking in van der Waals materials offers a powerful approach for designing emergent quantum devices. Using first-principles calculations, we investigate the layer-depende...
Electron–electron interaction-driven semiconducting ground state of oxygen-terminated zigzag graphene nanoribbons
Edge engineering of graphene nanoribbons introduces additional correlation effects, and oxygen-terminated edges offer excellent ambient stability. However, oxygen-terminated ribbons are extremely diff...
Three-dimensional visualization of lattice defects in <b> <i>β</i> </b> -Ga2O3 via synchrotron-radiation Borrmann-effect X-ray topo-tomography
β-Ga2O3 is a promising material for next-generation power electronics; however, its performance is strongly affected by lattice defects such as dislocations. In this study, we demonstrate three-dimens...
Structural characterization of neutron irradiated hexagonal boron-10 nitride-15 single crystals
The negatively charged boron vacancy (VB−) in hexagonal boron nitride (hBN) is a promising quantum defect that can be used to sense pressure, temperature, and magnetic field with high spatial resoluti...
Native oxide-engineered 3D-graphene/silicon photodetectors for imaging sensors and photonic logic applications
Silicon-based optoelectronic devices typically use hydrofluoric etching to remove native silicon oxide (SiO2) from silicon (Si) surfaces, thereby eliminating the interfacial insulating layer and reduc...
Ion magnetization in strong magnetic fields in an electrostatic–magnetic hybrid thruster
An electrostatic–electromagnetic hybrid thruster equipped with a superconducting magnet generating magnetic fields up to 1.13 T was experimentally characterized, focusing on ion magnetization as a nov...
Geometric dependence of critical-current variation in Al/AlO <i>x</i> /Al Josephson junctions: A model-based analysis
Achieving uniform critical current across Josephson junctions is essential for the large-scale integration of superconducting quantum circuits. In this work, we statistically analyzed the variation of...
Termination-dependent electronic structure reconstruction in epitaxial EuTe4 thin films
Layered EuTe4 has attracted considerable interest due to its intertwined charge density wave (CDW) phases and unconventional thermal hysteresis. While bulk EuTe4 has been extensively studied, its elec...
Large-area robust pure one-way bulk states in a square photonic reduced Haldane model
The coexistence of antichiral one-way edge states (AOWESs) and one-way bulk states (OWBSs) has recently been investigated in honeycomb photonic crystals, yet their realization in square photonic cryst...
Electrical spin injection into a normal modulation-doped AlGaAs/GaAs heterostructure with a CoFe spin source
We demonstrated electrical spin injection from a CoFe spin source into a two-dimensional electron gas (2DEG) channel formed in an AlGaAs/GaAs-based normal modulation-doped structure through the observ...
Probing optical and acoustic phonons in heated nano-Si/epoxy composites
Understanding thermal response of optical and acoustic phonons is crucial for designing functional polymer nanocomposites. We study silicon nanoparticle–epoxy composites with filler contents of 0.02–2...
Inverse spin Hall photocurrent in thin-film WSe2
At room temperature, spin-dependent photocurrents were observed near the electrodes of few-layer WSe2 samples under circularly polarized light excitation. The spin photocurrent exhibits a bipolar dist...
Deep-learning-assisted sound control: High-degree-of-freedom metalens design
Designing acoustic metalenses capable of customized beam control holds great potential for applications in focusing, imaging, and energy harvesting. However, conventional design methods often result i...
Investigating the impact of gate stacks on ALD IGZO transistors via source/drain contact characterization
Achieving co-optimization of performance and bias stability is crucial for enabling broader applications of indium-gallium-zinc oxide (IGZO) transistors in next-generation electronics. In this work, b...
Manipulation of magnetism and electronic structure of graphene nanoribbons via porphyrin serration
We use first-principles calculations to systematically investigate the structural, magnetic, and electronic properties of porphyrin-serrated zigzag graphene nanoribbons with 3d transition metal atoms...
Direct measurement of osmotic pressure and interparticle interactions in colloidal dispersions
Colloidal dispersions are widely found in systems ranging from natural environments to industrial materials. Their macroscopic properties such as viscosity and light scattering depend on their dispers...
Interfacial effects of cobalt in SrTiO3 devices for robust synaptic plasticity
In oxide memristors, improved memory parameters are often associated with physical mechanisms that are also favorable for synaptic operation, including interface-controlled transport. Here, we investi...
Effect of N2-flow on nitrogen vacancies, leakage, and polarization switching in sputtered ferroelectric AlScN films
Nitrogen vacancy (VN) defects in AlScN films play a critical yet underexplored role in determining leakage and polarization switching dynamics. In this work, we systematically investigate the effect o...
Magnesium oxide–based passivation and anti-reflection stack for back-contact silicon solar cells
Back-contact (BC) crystalline silicon (c-Si) solar cells require high-quality front-side passivation together with effective anti-reflection. In this work, we report a silicon oxide/magnesium oxide/al...