Applied Physics Letters
Articles in this Issue
Ammonium sulfamate enables multifunctional surface defect management for high-efficiency and stable perovskite solar cells
Realizing high-quality perovskite films with lower surface defects is regarded as one of the most effective ways to enhance the power conversion efficiency (PCE) and stability of perovskite solar cell...
Tuning magnetocaloric effect by carbon interstitial phase in RE15Si9Cx (RE = Er, Ho) compounds for hydrogen liquefaction
The manipulation of the magnetocaloric effect in rare-earth-based compounds through interstitial doping has attracted extensive research interest. While interstitials are known to regulate magnetic tr...
Dual-channel linear-to-circular polarization conversion based on a photonic time crystal
The manipulation of electromagnetic (EM) waves in the time dimension provides a higher degree of freedom in controlling these waves, which has led to significant research in the field of time-varying...
Solar-blind ultraviolet <b> <i>β</i> </b>-Ga2O3 phototransistor for logic and secure optical communication applications
This work presents the fabrication of a high-performance solar-blind phototransistor based on a β-Ga2O3 thin film with a ring-shaped gate electrode, featuring a high-κ Al2O3 gate dielectric layer. Und...
Piezoelectric strain-mediated control of the tunnel magnetoresistance effect in magnetic tunnel junctions with a Co2FeSi/V/PMN-PT multiferroic heterostructure
Electric field (E) control of the tunnel magnetoresistance (TMR) effect is a key technology for reducing power consumption during data writing in spintronic memory devices. In this Letter, we explore...
Structure of the very first atomic layer of Ga oxide on GaN at GaN oxidation front
The atomic structure of the GaN oxidation front formed by oxide deposition followed by annealing was analyzed using atomic-resolution transmission electron microscopy and first-principles calculations...
Tunable THz response in cobalt ferrite via magnetic field modulation
Despite significant advancements in terahertz (THz) generation and detection technologies, the practical deployment of portable THz systems remains constrained by existing modulator limitations, parti...
Over 450 V breakdown voltage in diamond vertical Schottky barrier diodes with anodic self-aligned mesa termination
In this work, diamond vertical Schottky barrier diodes (SBDs) with anodic self-aligned mesa termination were proposed and investigated. This kind of termination structure can effectively alleviate the...
Flexible dual-gated synaptic transistor for integrated physiological signal recognition
The recent development of numerous smart wearable electronics has accelerated progress in human–machine interaction and health monitoring technologies. However, processing the abundant motion and phys...
Study of electronic band alignment in SiGeSn/GeSn quantum well via internal photoemission effect
SiGeSn-based optoelectronic devices, which operate across a broad infrared wavelength range, have garnered significant attention. Among these, heterostructures incorporating quantum wells are particul...
Laser tweezers manipulation of diatom chloroplasts and intracellular viscosity evaluation
The advancement of optical tweezers has revolutionized biological research, enabling precise manipulation of microscopic objects. In this study, we applied optical tweezers to diatom algae, known for...
An energy-selective rasorber with switchable transmission/absorption band
In this paper, an energy selective rasorber with integrated frequency selective rasorber and energy selective surface (ESS) functions is proposed, which realizes the dynamic switching between wave-tra...
Impedance-dependent degradation in GaN HEMTs under high-voltage RF stress: Electro-thermal and trap mechanisms
This work investigated impedance-dependent degradation mechanisms in GaN high-electron-mobility transistors (HEMTs) under high-voltage radio frequency (RF) stress, focusing on electro-thermal coupling...
Ultralow threshold voltage in an epitaxial <i>p</i>-GeFeTe/<i>n</i>-Si heterojunction enabled by magnetic field modulation
Heterostructure diode architectures incorporating phase change materials (PCMs) have recently emerged as strong candidates for next-generation phase change random access memory (PCRAM) technology. How...
Electric field control of nonlinear Hall effect in the type-II Weyl semimetal TaIrTe4
The nonlinear Hall effect (NLHE), as an important probe to reveal the symmetry breaking in topological properties of materials, opens up a dimension for exploring the energy band structure and electro...
Magnetic skyrmions in confined nanocap geometries
We have prepared skyrmion-hosting Ir/Fe/Co/Pt multilayer films in the form of hemispherical cap arrays and investigated the magnetic spin textures within these nanocap structures. Analysis of magnetic...
Nanocavity-enhanced 3D-graphene/InP heterojunction for broad-spectral photodetection and information encryption
Indium phosphide (InP)-based photodetectors hold promise for optical communication and imaging due to excellent electron mobility. However, the intrinsic bandgap (1.34 eV) restricts photoresponse, esp...
High-voltage metamorphic 1064 nm InGaAs multi-junction laser power converters
Metamorphic InGaAs laser power converters (LPCs) grown on GaAs are ideal candidates for long-distance high-power electrical energy transmission. In this work, metamorphic 1064 nm In0.25Ga0.75As six-ju...
Electronic properties of extended surface defects in homoepitaxial GaN diodes
GaN on GaN vertical power devices are promising for high voltage applications beyond Si and SiC. Developing GaN substrates with low defect densities for high-quality epitaxial growth has been an ongoi...
Spin symmetry study in non-collinear CrSe: Odd-wave magnetism induced by glide mirror symmetry breaking
Unconventional magnets have attracted sustained attention due to their unique potential for spintronic applications. In this study, we investigate the influence of non-collinear spins on spin symmetry...
Thickness-driven drastic transition in the electrical conductivity of ultrathin MoS2 films grown by pulsed laser deposition
We report on the pulsed laser deposition of ultrathin MoS2 films and how their electrical conductivity is significantly sensitive to thickness variation. It is shown that the thickness of MoS2 ultrath...
Enhanced in-plane thermal conductivity of polar SrTiO3 by surface phonon polaritons within dual Reststrahlen band
As device miniaturization advances, efficient nanoscale heat dissipation becomes increasingly critical. Surface phonon polaritons (SPhPs) offer fast, long-range channels for thermal transport. Dual Re...
Tuning current-induced electron wind forces for adsorbates on graphene
By altering the electronic structure of current-carrying membranes, fine-tuning and optimization of current-induced forces on adsorbates become possible, facilitating the migration of adsorbates on me...
An adaptive harmonic AFM probe with enhanced sensitivity for cellular imaging
Accurate classification of cellular images plays an indispensable role in early cancer diagnosis. Based on signal enhancement, harmonic atomic force microscopy (AFM), distinguished by its high resolut...
Enhanced light–matter interaction and photodetection in TMDs using distributed Bragg reflectors (DBRs)
Over the past few years, the demand for high-performance optoelectronic devices has intensified, and the limitations of silicon have become a critical bottleneck. To overcome these constraints while e...