Applied Physics Letters
Articles in this Issue
Polarity effects on the growth of Si-doped AlGaN epilayers on AlN
We investigate the polarity dependent properties of Si-doped n-type AlGaN epilayers grown via metal organic chemical vapor deposition on Al- and N-polar AlN bulk substrates. While X-ray diffraction co...
The novel Zn-based ultraviolet birefringent crystals combined both large birefringence and wide bandgap
The exploration of ultraviolet (UV) birefringent crystals is hindered by the contradiction between a sufficient birefringence and wide bandgap. The first Zn-based selenite halides UV birefringent crys...
Voltage and efficiency characteristics of shifted-junction GaAs/GaInP thin-film solar cells and light emitters
Junction shifting (i.e., pushing the p-n junction within a wider-bandgap confinement layer) is an effective strategy to suppress nonradiative recombination in GaAs/GaInP light-emitting diodes (LEDs)....
Ultrafast multi-wavelength photosensitive memristive synapses based on (111)-oriented FAPbI3 for fusion neuromorphic visual perception
Neuromorphic visual perception requires photosensitive memristive synapses that combine ultrafast response, wavelength selectivity, and long-term operational stability. Here, we report photosensitive...
Network modeling of yield-stress fluid flow in randomly disordered porous media
Yield-stress fluid flow through porous media is governed by a strong coupling between rheology and pore-scale geometry, leading to nonlinear, non-Darcy transport and pronounced channelization near yie...
Multi-modal three-dimensional observation of unknown morphology of Ni4Ti3 and NiTi2 precipitates in NiTi shape memory alloy
Characterizing the 3D morphology of nano- and micro-scale precipitates in metallic materials remains challenging. By combining 3D focused ion beam imaging with nondestructive synchrotron x-ray ptychog...
Vertical r-GeO2 Schottky barrier diodes on single-crystal r-GeO2 substrates
In this work, we report on the electrical characterization of vertical r-GeO2 Schottky barrier diodes (SBDs) fabricated on low-doped single-crystal r-GeO2 substrates using Ni-based Schottky contacts....
Polarization-modulated electrical transport and photodetection in graphene/ <i>β</i> -InSe/graphene heterostructures
Sliding ferroelectricity in 2D β-InSe has been confirmed, but its intrinsic electrical and photo-response under ferroelectric polarization remain unclear. Here, graphene/β-InSe/graphene heterostructur...
Anomalous Nernst and Hall effects in Cr-doped MnSb thin films
The anomalous Nernst effect (ANE) has attracted extensive attention from both academia and industry owing to its unique thermoelectric physics and outstanding application potential. This study investi...
Anisotropic quantum confinement in interface-defined stanene quantum dots
Quantum dots (QDs) embedded in two-dimensional (2D) materials provide an ideal platform for exploring tunable quantum confinement in real and momentum space. Here, we investigate interface-defined sta...
Ultrasensitive acoustic sensing and optical comb generation in a hybrid optomechanical system
Cavity optomechanical systems have emerged as a powerful platform for high-sensitivity acoustic sensing. However, their sensitivities at kilohertz frequencies are typically limited due to the inherent...
Controllable nonlocality of acoustic meta-surfaces based on Willis coupling
Significant nonlocality is the principal mechanism enabling superior and versatile functionalities of non-local meta-surfaces with efficiency that goes far beyond conventional designs. Distinct from t...
Experimental quantum Bernoulli factories via Bell-basis measurements
Randomness processing in the Bernoulli factory framework provides a concrete setting in which quantum resources can outperform classical ones. We experimentally demonstrate quantum randomness processi...
Squeezed-light-controlled magnon–photon pair antibunching in a cavity optomagnonic system
We investigate magnon–photon pair antibunching in a cavity optomagnonic system, in which a yttrium iron garnet sphere simultaneously supports two optical modes and a magnon mode and is driven by squee...
Interfacial built-in electric field engineering in MnO2/MXene heterostructures for high-performance aqueous ammonium-ion hybrid supercapacitors
Aqueous ammonium-ion hybrid supercapacitors (AAHSCs) have attracted increasing interest owing to their environmental friendliness, low cost, and fast charge/discharge capability. However, the practica...
Hard carbon nanospheres derived from copper-ion-mediated crystalline topological regulation for efficient sodium-ion storage
Modulating graphite lattices in hard carbons derived from artificial organic polymer precursors is critical to achieve highly consistent anode materials for efficient sodium-ion storage. Herein, hard...
A visibly clear radiative cooling film with high sub-bandgap reflectance for enhancing solar cell performance
The performance of solar cells (SCs), including the photoelectric conversion efficiency and lifespan, significantly degrades with increasing operating temperature. Spectral-selective radiators with hi...
Extrinsic origin of nonreciprocal resistance in a non-chiral organic superconductor
We investigate nonreciprocal conductivity in the superconducting state of the molecular conductor κ-(BEDT-TTF)2Cu[N(CN)2]Cl. Although the material is neither chiral nor polar, we have observed nonreci...
Deep-depleted P+– <i>v</i> –N+ HgCdTe focal plane arrays for high-operating-temperature LWIR detection
Achieving the simultaneous optimization of quantum efficiency (QE) and dark current remains a formidable challenge for high-operating-temperature (HOT) long-wavelength infrared (LWIR) detectors. Conve...
Hole trapping and emission behavior near the valence band edge at an AlSiO/ <i>p</i> -type GaN interface revealed by repeated temperature-dependent <i>C</i> – <i>V</i> measurements
Bias instability associated with traps near the valence band edge at gate dielectric/p-type GaN interfaces poses a serious reliability concern for GaN metal–oxide–semiconductor field-effect transistor...
Phase transition control in multiple types of topological semimetals by tilt term
In this Letter, we studied the phase transitions between multiple types of various topological semimetals caused by the tilt term and the breaking of emergent inversion-like symmetry and antiunitary p...
Shear-thinning rheology reverses wall-induced motion of low-Reynolds-number propellers
We experimentally investigate how shear-thinning rheology modifies the near-wall motion of low-Reynolds-number propellers. Using a magnetic actuation platform, we examine two representative systems: a...
Thermal transport in n-type B-S co-doped and p-type B-doped diamond: A machine-learning potential study
Achieving reliable n-type doping in diamond is a long-standing challenge for high-power electronics. In this work, we systematically investigate the electronic structure and thermal transport properti...
Cubic Gd2O3 heteroepitaxial thin film fabricated via pulsed laser deposition: Structure and deep-UV photodetector
Aiming at the current research gaps in Gd2O3 single-crystal films and detection below 250 nm of UV light for Gd2O3-based photodetectors (PDs), this study employed pulsed laser deposition under a laser...
Interplay of defects, charge transport, and magnetoresistance in two-dimensional transition metal dichalcogenides—A Perspective
Transition metal dichalcogenides (TMDs) are a unique set of materials with appealing properties such as high charge carrier mobility, a broad range of spin–orbit coupling strength, and valley-coupled...