Applied Physics Letters
Articles in this Issue
First-principles prediction of symmetry-enforced multifold fermionic and bosonic degeneracies in M3Sn (M <b>=</b> V, Nb) compounds
Topological quantum materials featuring multifold band crossings have opened unprecedented pathways in the exploration of exotic matter phases. These multifold crossings with three-, six-, and eightfo...
Hydrogen-assisted removal of oxygen vacancies in β-Ga2O3
Oxygen vacancies (VO) are intrinsic defects in β-Ga2O3 that significantly impact its device performance. These vacancies can donate electrons to the conduction band, leading to unintentional n-type co...
Mid-infrared GaSb-based SAM APD with hole-initiated multiplication
The III–V-Sb separate absorption and multiplication (SAM) avalanche photodiode (APD) devices optimized for hole-initiated impact ionization have been developed. The hole-initiated process was selected...
Disentanglement of physical mechanisms for driving and detection in piezoelectric nanoelectromechanical systems
Nanoelectromechanical systems based on (Al,Ga)As/GaAs heterostructures with a two-dimensional electron gas can rely on both piezoelectric and electrostatic driving and detection. While this multifunct...
A postbuckling-based metamaterial for switching the propagation of surface acoustic waves
The use of periodic materials for wave control and signal processing has been a focus of intensive research over the past two decades and continues to garner significant attention. Common signal proce...
Multichannel visible light communication and sensing system over a single optical path
GaN multiple-quantum well (MQW) diodes inherently exhibit overlapping emission and detection spectra, enabling them to function as both a transmitter and a receiver simultaneously. This dual functiona...
A highly efficient photodetector for squeezed light measurement in the gigahertz range
Squeezed light plays a crucial role in state-of-the-art quantum metrology and quantum information experiments. There is significant interest in utilizing squeezed states at high MHz and GHz frequencie...
Piezoelectric tuning of the resonance frequency in the synthetic multiferroic structures α-Fe2O3/68%Pb(Mg1/3Nb2/3)O3-32%PbTiO3 in the sub-THz range
In this article, we present the results of studies carried out on the synthetic multiferroic structure α-Fe2O3/68%Pb(Mg1/3Nb2/3)O3-32%PbTiO3 (PMN-PT). The thicknesses of the α-Fe2O3 single crystal and...
Enhancing the electrical performance and stability of Hf-doped InZnO thin film transistors using dual-target co-sputtering technique
In this study, hafnium (Hf) was doped into InZnO films and related thin-film transistors (TFTs) were fabricated using co-sputtering. The optimal concentration of Hf doping atoms was obtained by contro...
Binder-free Co9S8/Ni7S6 heterostructure electrodes via one-step electrodeposition for high-performance coplanar micro-supercapacitors on paper
Coplanar micro-supercapacitors (CMSCs) are essential energy supply components for the development of wearable devices. However, inadequate energy density hinders their extensive utilization in flexibl...
Superconducting spintronic device based on Fe3GaTe2/CsV3Sb5/Fe3GaTe2 van der Waals heterojunctions
van der Waals (vdW) heterojunctions have emerged as highly promising candidates for next-generation spintronic devices, owing to their exceptional interface quality, scalability, and tunable electroni...
Self-powered polycrystalline SrSnO3/NiO heterojunction for ultra-stable and high-responsivity ultraviolet photodetection
Strontium stannate (SrSnO3), an emerging wide-bandgap semiconductor, holds great promise for ultraviolet (UV) photodetectors in space and flame detection applications; yet, its development has been co...
Arbitrary power splitting governed by quantum-like adiabatic transfer in acoustic multi-cavity coupled systems
In this work, a design approach for achieving arbitrary acoustic power splitting is proposed. Several space-varying air slits are adopted to connect multiple acoustic cavities, thus realizing quantum-...
Unconventional photon blockade in cavity optomechanical system
Traditionally, photon blockades (PB) are classified into two distinct categories—conventional and unconventional—based on their unique physical mechanisms. In relation to the cavity decay rate κ, conv...
Tailoring energy storage performance of BaTiO3–CeO2 lead-free films via nanostructure design and crystalline orientation
Relaxor ferroelectrics are promising for high-performance energy storage applications, particularly in miniaturized electronic devices and power systems. Herein, we investigate the influence of CeO2 d...
Optical transitions between entangled electron–phonon states in silicon
Silicon crystallizes in the diamond structure with two atoms per unit cell and supports three optical phonon modes. However, due to the centrosymmetric nature of the lattice, these modes do not induce...
Polarization-resolved surface and bulk states in CsPbBr3 single crystals via second harmonic generation
Due to their superior electronic and optical properties, halide perovskite single crystals have been potential candidates for developing high-efficiency optoelectronic devices. Defect states located o...
High-sensitivity surface acoustic wave magnetic field sensors enabled by amorphous Fe-Ga-B films with optimized boron content
Magnetic field sensors based on acoustic resonators and the ΔE effect in ferromagnetic thin films enable compact size, high sensitivity, wide bandwidth, chip-scale field detection. The sensing perform...
Polarization-oriented enhancement of ferroelectric photovoltaic performance in BiFeO3 synapses for neuromorphic vision systems
Ferroelectric photovoltaic (PV) synapses, which utilize polarization to precisely tune the photocurrent as synaptic weight, have attracted increasing interest due to their excellent polarization contr...
Probing magneto-thermoelectric transport in magnetic thin films using lock-in thermography under a varying DC offset
Lock-in thermography (LIT) is a powerful tool for studying magneto-thermoelectric effects in magnetic materials. While most studies have focused on thick or bulk films with negligible DC offset-induce...
Electric-field-induced fully compensated ferrimagnetism in experimentally synthesized monolayer MnSe
Owing to their inherent characteristics of zero stray field and terahertz dynamics, two-dimensional (2D) zero-net-magnetization magnets demonstrate the potential for miniaturization, ultradensity, and...
Enhanced channel mobility of hexagonal boron nitride/hydrogen-terminated diamond heterojunction field-effect transistor
Hydrogen-terminated diamond field-effect transistors (FETs) using a hexagonal boron nitride (h-BN) gate insulator were fabricated on a diamond surface with reduced surface roughness in the direction o...
The impact of laser and growth rate on trap formation in conventional and laser-assisted MOCVD GaN
A systematic deep-level transient and optical spectroscopy study indicated the relationship between trap concentrations and the growth rate of metal–organic chemical vapor deposition (MOCVD) GaN. The...
Thermoelectric properties of AgBiS2: Unveiling the origin of ultra-low lattice thermal conductivity and optimization strategies for electrical performance
AgBiS2, a typical I–V–VI2 compound, has attracted widespread attention in the thermoelectric community due to its inherently ultra-low-thermal conductivity. However, its practical applications are lim...
A reconfigurable grating unit based on a Bragg-grating-assisted Mach–Zehnder interferometer
Bragg gratings possess unique functional attributes as fundamental integrated photonic devices. A reconfigurable grating unit based on a Bragg-grating-assisted Mach–Zehnder interferometer (GAMZI) is p...