Applied Physics Letters
Articles in this Issue
Erratum: “Epitaxial (AlxGa1−x−yIny)2O3 alloys lattice matched to monoclinic Ga2O3 substrates” [Appl. Phys. Lett. <b>125</b> , 172106 (2024)]
High-performance GaSb-based interband cascade lasers with a top hybrid cladding
We report high-performance GaSb-based interband cascade lasers (ICLs) with a top hybrid cladding and operating around 3.5 μm at room temperature. Unlike the conventional superlattice (SL) claddings in...
Design guidelines for Si metal–oxide–semiconductor and Si/SiGe heterostructure quantum dots for spin qubits
Si-based spin qubits are promising due to their long decoherence time and the compatibility with state-of-the-art semiconductor technology and have been demonstrated using quantum dots (QDs) to host s...
Distinct effects of Na and heavy alkali (K, Rb) incorporation in Cu(In, Ga)Se2 solar cells
Density functional theory calculations are performed to explore the nature of the alkali incorporation in Cu(In, Ga)Se2 (CIGS) thin-film solar cells. It is revealed that all the alkalis (Na, K, Rb) pr...
Stacking-dependent tunable valley splitting in Janus SMoSiN2-based van der Waals heterostructure
Using the first principles calculation, we explore the modulation of valley-related properties of two-dimensional (2D) Janus SMoSiN2 monolayer by constructing van der Waals (vdW) heterostructure with...
Significant orbit-to-charge conversion in CoFeB/Pt/SrIrO3 trilayer by terahertz emission spectroscopy
Orbitronics has been extensively explored theoretically and experimentally in orbital-charge conversion. The spin-charge conversion efficiency induced by the orbital Hall effect can be much larger tha...
Native antisite defects in <i>h</i>-BN
Hexagonal boron nitride (hBN) is an excellent host for solid-state single phonon emitters. Experimental observed emission ranges from infrared to ultraviolet. The emission centers are generally attrib...
Methane sensing via unbalanced nonlinear interferometry using a CMOS camera and undetected mid-infrared light
Here, we present a high-sensitivity, rapid, and low-cost method for methane sensing based on a nonlinear interferometer. This method utilizes signal photons generated by stimulated parametric downconv...
Energy level alignment of confined hole states in InAs1−x−ySbxPy asymmetric double quantum dots for single-photon energy up- and downconversion
We present a combined experimental and theoretical study of uncapped In(As, Sb, P) graded composition laterally coupled asymmetric double quantum dots (DQDs), suited for application in nanodiodes or s...
Fiber-tip photothermal transducer with gold-coated multi-beam interferometric cavity for high sensitivity gas detection
The power-boosted laser transmitted via a fiber tip sinusoidally excites the target trace molecules, generating a photothermal (PT) effect. The Gaussian-distributed plane wave heats the medium adjacen...
Anticathode effect on multimodal azimuthal oscillations in electron beam generated E×B plasma
Electron beam (e-beam) generated plasmas with applied crossed electric and magnetic (E×B) fields are promising for low-damage (gentle) material processing. However, these plasmas can be subject to the...
High-power GeSn photodetector for 2-<i>μ</i>m RoF system
A radio-over-fiber (RoF) link simplifies the base station and network structure, adapting to the trends of high capacity and rapid development in modern communication. The development of 2-μm-band lin...
Universal scaling of electrostatic effects of a curved counter-electrode on the emitter field enhancement
Experiments on field electron emission from single-tip nanoemitters have typically been carried out using a counter-electrode with a finite curvature radius R, positioned at a distance dgap from the e...
Enhanced piezoelectricity in TiSXY monolayers based on electronegative polar moments effect
It is a challenge to find the relationship between the microscopic property of atoms in monolayers and the macroscopic piezoelectricity of monolayer. By first-principles calculation, we find not only...
Light-induced enhancement of alternating current poling quality and mechanical quality factor in ferroelectric single crystals
Alternating current poling (ACP) and light fields have been studied as domain engineering methods for regulating the domain structures and improving the physical properties of ferroelectric crystals b...
Strong interface coupling for enhanced photoresponse in 1D BiInSe/2D WSe2 phototransistor
With the improvement of heterostructure preparation technology, research on the physical properties and device performance of mixed-dimensional heterostructures has been greatly developed. Numerous st...
Heterostructure and interfacial engineering for low-resistance contacts to ultra-wide bandgap AlGaN
We report on the heterostructure and interfacial engineering of metalorganic chemical vapor deposition (MOCVD) grown reverse graded contacts to ultra-wide bandgap AlGaN. A record low contact resistivi...
Al2O3/<i>in situ</i> GaON gate dielectrics incorporated GaN MIS-HEMTs with stable VTH and significantly reduced interface state density
This work reports a metal–insulator–semiconductor High-Electron-Mobility-Transistor (HEMT) with Al2O3/in situ GaON bi-layer gate dielectric for improved threshold voltage (VTH) stability and reduced i...
High-power femtosecond mid-IR source with tunable center frequency and chirp
We present an experimental implementation of a chirped mid-infrared (mid-IR) high-power laser source with variable center frequency between 4 and 30 THz and continuously tunable frequency sweep of up...
Exploring the potential of 2D PtTe2-based memristors for neuromorphic computing
Neuromimetic devices have emerged as transformative technologies with the potential to redefine traditional computing paradigms and enable advanced artificial neural systems. Among various innovative...
Inductive effect of charge transfer in ferroelectrics and plasmonic Ag heterojunctions for enhanced CO2 photoreduction
Converting carbon dioxide into fuel and chemicals by utilizing solar energy represents a cutting-edge approach to carbon recovery and energy renewal. The transfer behavior of photogenerated electrons...
Peculiar spin Hall magnetoresistance in polycrystalline WTe2/Ni80Fe20 heterostructures
Charge–spin interconversion is a key issue in spintronics. It gives rise to a series of new phenomena, such as spin Hall magnetoresistance (SMR). In the present work, we report the peculiar SMR behavi...
Evolution of point defects in Bi2Te3-based materials and performance of thermoelectric modules subjected to <i> <b>γ</b> </i>-irradiation
Bismuth telluride (Bi2Te3), renowned for its exceptional thermoelectric (TE) properties near room temperature, is used in extreme environments such as deep space exploration, leading to extensive atte...