Applied Physics Letters
Articles in this Issue
Energy efficiency of 100 fJ/bit for bit rates beyond 50 Gb/s for 940 nm single mode VCSELs
We demonstrate major advancements in the energy efficiency of single mode, oxide-confined, vertical-cavity surface-emitting lasers at 940 nm wavelength, being promising for optical interconnects. We w...
Twisted spin waves in a cylindrical magnonic crystal
Twisted spin waves (or twisted magnons, TMs) have significant potential in high-capacity communication due to their orbital angular momentum (OAM) degree of freedom. Consequently, manipulating the pro...
Perovskite-based transparent pn junction in CuI/SrTiO3 toward enhanced photoelectric response <i>via</i> interfacial homogeneous perovskite LaCoO3 transition layer
A transparent pn junction comprising CuI/LaCoO3 QDs/SrTiO3 was synthesized using the solgel-hydrothermal-freeze drying-sputtering in situ iodization method. The CuI/LaCoO3 QDs/SrTiO3 pn junction achie...
Minimization of temperature reached by adiabatic demagnetization refrigeration in Ce-based intermetallic Ce2(Cu1<b>−</b> <i>x</i>Ni<i>x</i>)2In
Magnetic entropy remaining near absolute zero temperature in the antiferromagnetic (AFM) critical state is expected to be usable for the cryogenic magnetic refrigeration. In this paper, we report quas...
Advancements in low-density crystalline silicon allotropes
While numerous crystalline Si allotropes have been predicted in recent years and, in several instances, synthesized under high pressure, the exploration of Si phases with a lower density than conventi...
Spin–current volume effect on iron gallium films
The application of spin–current volume effect (SVE) with volume magnetostriction of iron gallium (FeGa) films is examined for micro-diaphragm actuation. A silicon diaphragm measuring 1.5 × 1.5 mm2 is...
Achieving high mobility and enhanced illumination stability in InPrO homojunction thin-film transistors
Amorphous oxide semiconductor thin-film transistors (TFTs) are widely used in display technology, yet balancing high mobility with illumination stability is challenging. In this article, we report a h...
Grafted AlGaAs/GeSn optical pumping laser operating up to 130 K
Group IV GeSn double-heterostructure (DHS) lasers offer unique advantages of a direct bandgap and CMOS compatibility. However, further improvements in the laser performance have been bottlenecked by t...
The origin of the uniaxial magnetic anisotropy in Fe/GaAs(100) system
Fe/GaAs is a prototype system of spin injection at room temperature. The interfacial strain and oriented bonds are both considered the origin of the Fe in-plane uniaxial magnetic anisotropy (UMA), whi...
Near-sensor reservoir computing for Braille recognition via high stability memristors
Converting external physical information into tactile sensations for efficient dynamic processing like human beings is crucial for edge applications such as intelligent prosthetics and robotics. Reser...
Impact of quantum well thickness on hole mobility in strained germanium heterostructures
Germanium (Ge) and silicon (Si), group IV semiconductors, as innovative epitaxial structures, continue to offer improved properties and enhanced parameters for applications in classical and quantum el...
CdO: A promising flexible and transparent thermoelectric power generator
Transparent thermoelectric films have attracted much interest due to the unusual coexistence of thermoelectric and optical transparency in a single device. Moreover, many devices, such as implantable...
Simple and effective magnetic cilia arrays for exploring metachronal beating dynamics
Biological cilia, hair-like structures on cell surfaces, generate fluid flow through coordinated motions called metachronal waves. However, controlling metachronal waves in artificial systems often re...
A homogeneous plasmon-enhanced Raman biosensor integrated with LASSO and deep learning approach to advance label-free and rapid diagnosis of urolithiasis
Accurate detection and diagnosis of urolithiasis are critical to follow-up clinical treatments. Current stones diagnosis commonly relies on on-spot urinalysis assisted with extra gold standard examina...
Rapid growth kinetics of β-Fe3Ge2 intermetallic compound within undercooled liquid Fe–Ge alloys
The rapid dendrite growth of the β-Fe3Ge2 intermetallic compound within two liquid Fe–Ge alloys was investigated using the bulk undercooling technique. The liquid undercooling was achieved up to 202 K...
Anisotropic magnetoresistance in antiferromagnetic kagome metal GdTi3Bi4
We reported the experimental investigation of magnetic kagome metal GdTi3Bi4 single crystals by detailed magnetic and magnetotransport measurements. The crystal shows an antiferromagnetic ordering at...
Depth-sensitive atomic ratio between iodine/lead and nitrogen/lead in lead halide perovskite film during octylammonium iodide-based surface modification
Atomic ratios of iodine/lead (I/Pb) and nitrogen/lead (N/Pb) are carefully examined during octylammonium iodide (OAI) based surface modification on lead halide perovskite (PVSK). X-ray photoemission s...
Spin Hall effect in 3<i>d</i> ferromagnetic metals for field-free switching of perpendicular magnetization: A first-principles investigation
Ferromagnetic metals, with the potential to generate spin current with unconventional spin polarization via the spin Hall effect, offer promising opportunities for field-free switching of perpendicula...
Theoretical limits for energy density of aligned ferromagnetic nanoparticles in a nonmagnetic matrix for rare-earth-free permanent magnets
Developing permanent magnets with fewer critical elements requires understanding hysteresis effects and coercivity through visualizing magnetization reversal. Here, we numerically investigate the effe...
Alternative contacting strategy for correlated perovskite nickelates: From the overlooked perspective of the metallic work functions
While the multiple electronic phase transitions in rare-earth perovskite nickelates (ReNiO3) open up a new paradigm in developing the next-generation logical devices and sensors catering for artificia...
Electrically tunable GHz acoustic waveguide using Al0.7Sc0.3N thin film
This Letter introduces an innovative electrically tunable suspended acoustic waveguide utilizing aluminum scandium nitride thin film. This design allows for dynamic modulation of the phase of travelin...
Directional enhancement of pyroelectricity in Pb(Zr0.52Ti0.48)O3 films by DC poling
Pyroelectricity has attracted significant attention for its potential applications in infrared sensors and energy harvesting. However, its underlying mechanisms remain incompletely understood. This st...
Composition evolution of crystal structure and negative thermal expansion in pyro-vanadate–phosphate Cu1.8Zn0.2V2–<i>x</i>P<i>x</i>O7
We constructed a composition–temperature phase diagram for Cu1.8Zn0.2V2–xPxO7 based on structural analysis conducted using synchrotron radiation over the entire compositional range and a wide temperat...
Off-state magnetoresistance in long-channel germanium Schottky-barrier MOSFETs
An increasing magnetic field perpendicular to an undoped semiconductor surface at low temperature is known to strengthen the binding of localized electrons to stationary ions, as the wavefunction's ta...
Simulation study of cell permeabilization induced by pulsed magnetic field considering radial stress effects
Non-contact pulsed magnetic fields can enhance the permeability of biological cells, creating an innovative approach for delivering external substances through cell membranes. However, the mechanism b...