Applied Physics Letters
Articles in this Issue
Spatially resolved collision network in glow discharge via voltage–space–energy mapping
Spatial evolution of microscopic collision mechanisms in non-equilibrium plasmas is a key challenge in energy transfer research. This work introduces a diagnostic method: By mapping probe bias voltage...
The unidirectional dipole wave in (0-10)-oriented SrTiO3/PbTiO3/SrTiO3 films
Dipole waves, characterized by continuous polarization rotation in a sinusoidal function, have great potential for next-generation nanoelectronics. These propagating polarization modulations enable na...
Spin wave propagation in a ring-shaped magnonic waveguide
We experimentally investigate frequency-selective spin wave (SW) transmission in a micrometer-scale, ring-shaped magnonic resonator integrated with a linear yttrium iron garnet stripe. Using super-Nyq...
Favorable band alignment induced by CdxZn1−xS buffer layer in CuInS2 photocathodes for efficient solar hydrogen production
Photoelectrochemical water splitting offers a promising route for sustainable hydrogen generation. However, interfacial band alignment issues, particularly unfavorable “cliff-like” conduction band off...
Expanding the elastocaloric temperature range of ternary Ti–Ni–Fe alloys by laser-directed energy deposition additive manufacturing
Elastocaloric cooling is an emerging solid-state refrigeration technology and offers a promising alternative to conventional vapor-compression systems. However, expanding its operational temperature r...
Enhancement of drain soft-breakdown strength to 1.1 MV/cm for hydrogen-terminated diamond MOSFETs by mitigating hydrogen-induced defects
Diamond surface quality is critical to improve the power and reliability for the hydrogen-terminated diamond (H-diamond) metal-oxide-semiconductor field-effect transistors (MOSFETs). In this Letter, s...
Boosting charge-to-spin current conversion using orbital Hall effect of Ru with opposing spin–orbit correlated interlayers
Power-efficient spintronics has long been pursued for scalable and commercially viable devices. While significant progress has been made using materials that exhibit the spin Hall effect (SHE), the or...
“Mic drop”: On estimating the size of sub-mm droplets using a simple condenser microphone
The size distribution of aerosol droplets is a key parameter in a myriad of processes, and it is typically measured with optical aids (e.g., lasers or cameras) that require sophisticated calibration,...
Dual-sensitization mechanism in Pd–SnSe2/SnO2 heterostructures for humidity-resistant NO2 sensing at room temperature
Noble metal catalysts play a vital role in enhancing the sensor performance of metal oxide semiconductors, yet their sensitization mechanisms in metal selenide materials remain insufficiently explored...
Avalanches during sea snail fracture: Power-law mixing in layered composite materials
Layered composite materials are common in fields such as integrated circuits, aircraft, and biomedicine. Here, we study the avalanche-like failure mechanism of the shell of Peristernia reincarnate, a...
Stable localized excitons at room temperature via exciton–plasmon coupling in monolayer WSe2
Two-dimensional transition metal dichalcogenides possess remarkable excitonic properties, including strong Coulomb interactions, valley-selective optical transitions, and high photoluminescence effici...
Low-loss GaN monolithic bidirectional switch via antiparallel connected HEMTs with recessed Schottky drain
A low-loss gallium nitride monolithic bidirectional switch (MBDS) is demonstrated by antiparallel connecting two high electron mobility transistors (HEMTs), which feature recessed Schottky-type drain...
Enhancement of peak electric fields for spintronic terahertz emitters through bidirectional radiation superposition
Spintronic terahertz emitters (STEs) are highly desirable for terahertz (THz) spectroscopy applications because of their advantages of broadband and high peak fields. However, the emission strength of...
Nonlinear gyrotropic magnetic vortices for efficient pattern recognition
In nature-inspired computing, the search for compact and efficient nonlinear elements is key to mimicking the brain's remarkable capabilities. Spintronic oscillators offer a promising platform due to...
Defining the magnetic configuration of the artificial spin system by FIB fabrication
Focused ion beam (FIB) is a popular technique for patterning material layers and designing a variety of geometries. When a magnetic layer is patterned, the final magnetic state of the layer depends no...
Evidence for energy-dependent scattering dominating thermoelectricity in heavy fermion systems
In the field of thermoelectric materials and devices, improving energy conversion efficiency remains a long-standing challenge. As a promising approach to address this issue, utilizing energy-dependen...
Loss investigations of high-frequency lithium niobate Lamb wave resonators at ultralow temperatures
Lamb wave resonators (LWRs) operating at ultralow temperatures serve as promising acoustic platforms for implementing microwave-optical transduction and radio frequency (RF) front-ends in aerospace co...
Indistinguishable single photons from nanowire quantum dots in the telecom O-band
On-demand single-photon sources operating at telecom wavelengths are crucial for quantum communication and photonic quantum technologies. In this work, we demonstrate high-purity, indistinguishable si...
Lead-free perovskites for indoor photovoltaics
With the rapid development of indoor photovoltaics as an energy-efficient solution to power devices in low light conditions, lead-free perovskite materials have emerged as promising candidates. Partic...
2.5 W GaSb-based VECSEL at 2062.4 nm with an absolute wavelength stability below 1 MHz
We present a GaSb-based vertical-external-cavity surface-emitting laser (VECSEL) tailored as a low-noise pump source for quantum frequency conversion. The 2062.4 nm emitting VECSEL emits a single-freq...
Observation of microscopic damage in nanomaterials using laser-accelerated proton beams
Owing to their broad energy spectrum, short pulse width, and high particle numbers, laser-accelerated protons offer significant advantages for rapidly evaluating the durability of materials and unders...
Investigation of degradation mechanisms and post-annealing effects in polymer field-effect transistors under x-ray irradiation
This study examines the effects of x-ray irradiation-induced degradation on polymer DPPT-TT field-effect transistors (PFETs) with different gate dielectrics, including poly(methyl methacrylate) (PMMA)...
High-photosensitivity optoelectronic synaptic transistors based on triple-cation perovskite for neuromorphic vision system
Optoelectronic synaptic transistors are considered as a key hardware foundation for building neuromorphic vision systems. Due to the lack of photosensitive materials with high optical absorption coeff...
The <i>V</i>th shift mechanism in MIFIS FeFET: A field-driven perspective
Hafnium-based ferroelectric field-effect transistor (FeFET) has demonstrated potential for 3D NAND applications. By introduction of a gate interlayer (GIL), the metal–interlayer–ferroelectric–interlay...
Broadband 2- <i>μ</i> m superluminescent diodes with GaSb-based variable-thickness quantum wells
A GaSb-based superluminescent diode (SLD) operating near the 2-μm wavelength region, employing quantum wells with variable thicknesses to achieve broadband emission, is reported. The gain region incor...