Applied Physics Letters
Articles in this Issue
Enhanced linear electro-optic effect in BaTiO3 nanocrystal films prepared by electrophoretic deposition
Electro-optic (EO) modulators are essential for high-speed optical communication and integrated photonic systems, yet the development of low-cost materials with strong Pockels activity remains a chall...
Spin–orbit fields induced by topological insulator in (Ga,Mn)As/Bi2Te3 heterostructures
We investigate current-induced spin–orbit fields (SOFs) in a bilayer heterostructure composed of a ferromagnetic semiconductor (Ga,Mn)As and a topological insulator (Bi2Te3). Planar Hall resistance (P...
Far-UVC micro-LED arrays for efficient light extraction and fiber coupling
The emission behavior of arrays of far-UVC micro-LEDs emitting at 234 nm has been studied and compared to large area LEDs. The use of the micro-LEDs enhanced the light extraction efficiency by a facto...
Spin wave assisted synchronization in 2D arrays of spin torque oscillators
This work reports on achieving synchronization in a large 2D array of spin-transfer torque nano-oscillators (STNOs) by means of propagating spin waves. The synchronization is made possible by means of...
Anisotropic colossal electro-resistance effect in epitaxial layered Pr0.5Ca1.5MnO4 films
Colossal electro-resistance (CER), i.e., the change in the electric resistivity up to orders of magnitude with an increasing electric field or current, is a central empirical feature of many manganite...
Characterization of a tantalum-aluminum-based kinetic inductance detector for far-infrared space applications
Future far-infrared space observatories equipped with cryogenic telescopes require ultra-sensitive detectors to enable measurements limited only by the sky background. We present the design, fabricati...
Direct detection of 14.1 MeV neutrons by multi-stacked <i>h</i> -BN detector
Reliable detection of 14.1 MeV neutrons from deuterium–tritium (DT) fusion reactions is vital for advancing nuclear energy, bolstering national security, and managing nuclear waste. Despite their impo...
High-performance 2D indoor perovskite solar cells via ferroelectric-enhanced carrier separation
Two-dimensional perovskite materials offer tunable bandgaps, strong light absorption, and enhanced stability, which are ideal candidates for indoor photovoltaics (IPVs), yet their overall performance...
Engineering of disorder-immune metadevices based on Huygens congener dipole element
Wavefront manipulation via Huygens metasurfaces is rapidly advancing and holds great potential for a wide range of optical applications. However, in low-cost and low-precision manufacturing scenarios,...
Hybrid magnonic–spintronic system for tunable broadband signal filtering and microwave generation
Non-conventional beyond-the-state-of-the-art signal processing schemes require parallelism, scalability, robustness, and energy efficiency to meet the demands of complex data-driven applications. With...
First-principles prediction of quantum anomalous Hall effect in the O-functionalized TiVC MXene
The quantum anomalous Hall (QAH) effect, which enables quantized Hall resistance without an external magnetic field, has attracted significant attention in two-dimensional materials for potential appl...
Self-powered 2D PbI2 Schottky photodetector for encrypted optical communication
Two-dimensional PbI2, a layered material with atomic thickness and high carrier mobility (μe ∼ 4600 cm2/V·s, μh &gt; 3000 cm2/V·s), shows strong potential for post-Moore optoelectronics. In this s...
Temperature-dependent Raman spectroscopic studies of AlN epi-films by metal-organic chemical vapor deposition
Temperature-dependent Raman scattering measurements are performed over the range of 80–810 K, and an investigation is conducted on two AlN epitaxial films (1.8 and 3.7 μm) grown on sapphire by metal-o...
Synergistic dual-polarization-photogated AlGaN heterojunction phototransistor for ultrafast solar-blind ultraviolet detection
Overcoming the persistent photoconductivity (PPC) effect in AlGaN-based heterojunction phototransistors without compromising gain and spectral selectivity remains a critical challenge for solar-blind...
Anomalous Hall effect and spin reorientation in (110)-oriented NiCo2O4 epitaxial films
Compared to high-symmetry (001)-oriented films, the low-symmetry and anisotropically strained (110)-oriented NiCo2O4 films provide an essential platform for investigating the origins of magnetic aniso...
An imaging radar using a Rydberg atom receiver
Rydberg atoms in a gas form are highly sensitive electric field probes capable of detecting and measuring the amplitude, phase, and polarization of broadband time-varying signals. Here, we present the...
Diffusing the photon-assisted regenerated holes to increase the WPE for 259 nm AlGaN-based DUV LEDs with three-dimensional n-ZnO/p-AlGaN photon-sensitive micro-structure arrays
In this work, we have proposed and fabricated 259 nm AlGaN-based deep ultraviolet light-emitting diodes (DUV LEDs) with three-dimensional (3D) n-ZnO/p-AlGaN micro-structure arrays. The 3D n-ZnO/p-AlGa...
Controllable synthesis of wafer-scale two-dimensional PdTe2/PdSe2 vertical heterostructure with broadband nonlinear optical response
Two-dimensional (2D) materials have shown significant potential in electronics, optoelectronics, and nonlinear optics. However, individual 2D materials often face limitations in nonlinear optical (NLO...
Active spin state-derived descriptor for hydrogen evolution activity in 2D transition metal dichalcogenides
Spin states are pivotal in modulating the electrocatalytic activity of transition metal (TM)-based compounds, yet quantitatively evaluating the activity-spin state correlation remains a formidable cha...
Pressure-enhanced ultra-deep-blue emission in unconventional layered metal halide with hybrid cations
High-energy and narrowband free-exciton emissions make two-dimensional hybrid metal halide perovskites (2D HMHPs) promising candidates for blue-light phosphors. However, achieving ultra-deep-blue emis...
Real-time dynamics of VCMA-assisted switching of magnetic tunnel junctions
Voltage control of magnetic anisotropy (VCMA) induced by charge accumulation is typically considered as an ultrafast process, enabling energy-efficient and high-speed magnetization switching in spintr...
Fe-related defect-induced strong broadband two-photon absorption and nonlinear refraction transients in <b> <i>β</i> </b> -Ga2O3 for ultrafast all-optical switching
Investigating the broadband nonlinear optical response and related dynamic mechanisms in the wide-bandgap semiconductor gallium oxide is crucial for ultrafast photonic applications. In this study, tra...
High-performance MSM photodetector based on MgZnO/InGaO heterojunction for solar-blind UV detection
A solar-blind metal–semiconductor–metal ultraviolet photodetector (UVPD) based on a MgZnO/InGaO (MZO/IGO) heterojunction (MIH) was fabricated. The presence of self-trapped holes in the non-bonding p-o...
Fringe contrast adjustable snapshot high-sensitivity digital holographic microscopy with a white light LED
We introduce a wideband light-emitting diode (LED) illuminated snapshot on-axis reflective digital holographic microscopy (DHM) system where the fringe contrast in holograms can be optimized to achiev...
Quantifying electrokinetic recovery of rare earth elements via electric charge modeling
Electrokinetic mining (EKM) offers a sustainable pathway for extracting rare earth elements (REEs) from ion-adsorption deposits, yet the governing recovery mechanisms remain poorly understood. Here, w...