Applied Physics Letters
Articles in this Issue
High-power eight-channel DFB–SOA MOPA array for optical I/O technology
We propose and experimentally demonstrate an eight-channel high-power distributed feedback–semiconductor optical amplifier (DFB–SOA) master oscillator–power amplifier array with 100 GHz wavelength spa...
Electrically active oxide defects in Ni/Al2O3/4H-SiC diodes mimicking CAV-related defect levels
Accurate identification of electrically active defects is essential for understanding and controlling the electronic and optical properties of semiconductors. In this work, we investigate electrically...
Formation of expanded percolation network via interfacial modification in BN/epoxy composites
Polymer composites incorporating high thermal conductivity fillers are widely used as thermal interface materials, yet their heat dissipation capability is still limited by interfacial thermal resista...
Current-induced torque dominated by the orbital Hall effect in Au
We report current-induced torque generated by the orbital Hall effect in Au. Although Au is a heavy metal with strong spin–orbit coupling, its spin Hall effect is intrinsically weak, making it a suita...
Feasibility of bright illumination attack using 830 nm coherent light on the practical quantum key distribution systems
Bright illumination attack (BIA) is considered one of the most serious eavesdropping attacks on quantum key distribution (QKD) systems. Various countermeasures have been proposed to eliminate this thr...
Directional transport of metallic nanowires via line-contact photothermal shock on microfibers
Nanotechnology faces a critical challenge in achieving precise manipulation from liquid-phase environments to solid-phase interfaces. Microfiber platforms have enabled photothermal control of nanomate...
Red emission enhancement via strong coupling between photonic–plasmonic band states in InGaN/GaN honeycomb nanocolumn plasmonic crystals
InGaN-based light-emitting diodes (LEDs) exhibit excellent emission efficiency in the blue spectral region but experience severe degradation of external quantum efficiency in the red region, primarily...
Engineering 2D high-temperature ferromagnets with large in-plane anisotropy via alkali-metal decoration in a tetragonal CoSe monolayer
Two-dimensional (2D) ferromagnetic materials with high Curie temperature (Tc) and large magnetic anisotropy energies (MAEs) are critical for nanoscale spintronics but remain rare. Using first-principl...
Visible light-driven photoelectric synaptic transistors based on Ga2O3/IGZO heterostructure for neuromorphic computing
Photoelectric synaptic transistors (PSTs) based on metal–oxide semiconductors are endowed with advantages such as stability and scalability. However, they encounter difficulties in the modulation unde...
Sunlight-assisted enhancement of hydroelectric generators utilizing p-type and n-type CNT fabrics
Hydrovoltaic technology harnesses the ubiquitous and perpetual hydrologic cycle for solid–liquid interfacial energy conversion. However, contemporary hydrovoltaic systems exhibit multifaceted performa...
45.73 W/g ultra-flexible perovskite solar cells enabled with benzyl benzylcarbamate additives
Ultra-flexible perovskite solar cells (UF-PSCs) hold immense promise for wearable and aerospace applications, yet their development is limited by the intrinsic brittleness of perovskite films, which s...
DC-sputtered ZnO nanoflake thin films for high-performance self-powered UV photodetectors
Here, we report a self-powered metal–semiconductor–metal ultraviolet (UV) photodetector based on a compact ZnO thin film deposited by direct current magnetron sputtering onto a p-type silicon substrat...
Resistive switching performance and mechanisms in Sb-doped perovskite-poly(9-vinylcarbazole) composite memristors
A composite material of perovskite and poly(N-vinylcarbazole) (PVK) is investigated as the resistive switching (RS) functional layer to suppress the interference of AgIx on RS performance, while low-t...
Decoupling and suppression of opto-thermal drifts in SERF atomic co-magnetometers via precise null-point characterization
The long-term bias stability of spin-exchange relaxation-free atomic co-magnetometers is significantly constrained by coupled opto-thermal fluctuations. Traditionally, random systemic offsets at the m...
Controllable multimodal switching in TaO <i>x</i> -based RRAM through Ar/O2 sputtering ratio and stacking sequence regulation
TaOx-based resistive random-access memory (RRAM) is a promising candidate for next-generation nonvolatile memory due to its high density, low power consumption, and simple architecture. This work inve...
Enhanced temperature stability of flexoelectricity through high-entropy design
Flexoelectricity is an electromechanical coupling phenomenon in which strain gradients induce electric polarization in solids, which have promising applications in flexible electronics, photovoltaic d...
Simulation of gain characteristics in AlGaN quantum wells under impact of inhomogeneous band broadening
We demonstrate a novel band broadening model for the effects of alloy fluctuation on stimulated emission in aluminum gallium nitride (AlGaN) quantum wells (QWs). This model is used to study UV-C laser...
Ideal long-range quantum-resource generator in zero-index photonic crystal waveguide
Mitigating quantum decoherence and enhancing long-range entanglement are critical to the advancement of quantum information applications. We propose a photonic crystal-air-photonic crystal sandwich-st...
Raman-integrated scanning electrochemical cell microscopy for <i>operando</i> localized spectroelectrochemistry
Scanning electrochemical cell microscopy (SECCM) utilizes a meniscus formed between the sample surface and the tip of a glass pipette filled with electrolyte as a confined electrochemical cell, enabli...
Spatio-spectral full-Stokes mapping of broadband terahertz pulses
We report a method for full-Stokes spatio-spectral characterization of broadband terahertz pulses from 0.5 to 2.5 THz. By combining two-dimensional electro-optic sampling with frequency-resolved Stoke...
Optical modulation of gate-induced electron trapping via persistent photoconductivity in SrTiO3/AlOx heterostructures
The dynamic interplay between light and electric field control of charge states lies at the heart of developing multifunctional optoelectronic devices. While persistent photoconductivity (PPC) and gat...
Achieving an ultra-thin GaN channel layer in AlGaN/GaN/AlN high electron mobility transistors
AlGaN/GaN high electron mobility transistors (HEMTs) with an AlN back barrier have shown significant potential in high-voltage and high-frequency applications. However, achieving an ultra-thin and smo...
Origins and correction of secondary peaks in timing jitter of high-speed superconducting nanowire single-photon detectors
Superconducting nanowire single-photon detectors (SNSPDs) offer high detection speeds and excellent timing resolution, enabling numerous applications such as high-speed quantum communication and deep-...
Modeling interference of spin-waves and electromagnetic leakage in micron-scaled spin-wave transducers
The utilization of spin-wave transducers for radio frequency signal processing provides significant potential due to intrinsic tunability, scalability, and nonlinearity. However, signal interference w...
Layer-dependent piezoelectricity and robust magnetic anisotropy in Janus CrSCl
Two-dimensional Janus materials with both piezoelectricity and ferromagnetism hold great potential for multifunctional spintronic devices. Using first-principles calculations, we investigate monolayer...