Applied Physics Letters
Articles in this Issue
Deterministic magnetization switching by giant orbital torque in perpendicularly magnetized V/Pt/Co heterostructures
Spin–Orbit Torque Magnetic Random-Access Memory is a next-generation memory technology. Its conventional switching scheme relies on the spin Hall effect to switch the magnetization of the free layer....
Green LEDs with V-defects formed from intentional dislocation half-loops
Group III-nitride light emitting diodes (LEDs) suffer from poor efficiency for longer wavelength emission. This is partly due to increased polarization-induced barriers to vertical carrier injection a...
Thermally tunable high-voltage breakdown and divergent avalanche nonlinearity in planar SnO2 nanofilm varistors
We present a planar, dopant-segregation-free SnO2 nanofilm varistor on a polycrystalline Al2O3 substrate that achieves a kilovolt-level breakdown voltage (V1 mA ≈ 759 V at 300 K). By directing the con...
A reconfigurable, broadband light-field mapper for illusionary effects
The manipulation of light field is pivotal for advancing optical technologies. Here, we present a reconfigurable optical system based on lens-fiber networks that function as a light-field mapper, capa...
Microwave-photonic control of optically accessible spin defects in diamond
A growing variety of optically accessible spin qubits have emerged in recent years as key components for quantum sensors, computers, and memories. However, the scalability of conventional spin-based q...
Physical reservoir computing using all-solid-state LaZrO/InO electric double-layer thin-film transistor
Machine-learning-based AI prediction drives rising electricity use and processing demands, raising sustainability concerns. Reservoir computing reduces training by optimizing only output weights, and...
An engineered metal-to-insulator transition in a two-dimensional network of degenerate phosphorus quantum dots in silicon
Phosphorus quantum dots (QDs) in silicon are a prominent candidate for semiconductor quantum computing based on donor spins. In this work, we report the formation of degenerate phosphorus QDs with a r...
Quantitatively separating superexchange and direct exchange interactions in 2D ferromagnetic materials
Two-dimensional (2D) ferromagnetic (FM) materials are promising candidates for emerging energy-efficient electronic devices. Various modulation strategies have been proposed to increase their rather l...
Geometric and size effects on the thermal conductivity of fishbone-like nickel nanowires
Thermal conductivity at the nanoscale often deviates significantly from that of bulk materials due to the mean free path of heat carriers becoming comparable to the system's dimensions, which challeng...
A metal-free phosphorus–oxygen/nitrogen–carbon configuration as an effective metal–nitrogen–carbon analog for accelerated lithium-sulfur redox kinetics
The practical deployment of lithium-sulfur batteries is limited by the polysulfide shuttle effect arising from sluggish sulfur redox kinetics. While metal–nitrogen–carbon (M–N–C) catalysts are effecti...
Uniaxial strain-induced spin textures transition in the kagome magnet Fe3Sn2
The mechanical control of magnetism represents a promising frontier in spintronics. However, its experimental application is mostly confined to the elastic strain regime, which limits the exploration...
Interface charge inhomogeneity at Al2O3/OH-diamond (111) characterized by time-resolved scanning nonlinear dielectric microscopy
Inversion-channel diamond metal-oxide-semiconductor field-effect transistors (MOSFETs) suffer from channel mobility far below the bulk value, yet the microscopic origin of this limitation has not been...
Bio-based self-powered triboelectric sensor for intelligent early-warning monitoring in rhythmic gymnastics
Rhythmic gymnastics is characterized by high flexibility, explosive power, and multi-joint coordination; during vertical jumps (VG), kick leg (KL), split leap (SL), and landing, the lower limbs are re...
A LiNbO3 A1 Lamb-wave resonator with Archimedean spiral electrodes
Lithium niobate (LiNbO3) thin-film-based A1 Lamb-wave resonators hold significant promise for high-frequency broadband radio frequency acoustic devices because of their high phase velocity and large e...
Brightening otherwise-weak molecular electroluminescence via intermolecular energy transfer
Manipulating the electroluminescence of organic molecules is important for the development of advanced organic light-emitting diodes (OLEDs). Here, we demonstrate a single-molecule sensitization strat...
CMOS programmable metachip for terahertz multifunctional sensing
A CMOS-based programmable terahertz (THz) metachip for multifunctional sensing is proposed and experimentally demonstrated in this work. Fabricated using a standard 55-nm CMOS process, the metachip is...
Inhibition of graphitization on diamond surfaces via flash joule heating and construction of chemical bonds for tungsten metallization
Surface metallization is a critical process for diamonds in thermal management applications. However, bottlenecks such as graphitization, inhomogeneous interfacial phases, and high interfacial thermal...
Broadband and high-efficiency polarization rotation using a single-layer transmissive metastructure
A single-layer, free-standing metamaterial polarization rotator has been proposed, which achieves broadband and high-efficiency linear polarization rotation in transmission mode. The structure compris...
Enhancing the efficiency of ZnSeTe-based quantum-dot light-emitting diodes by manipulating charge dynamics
In conventional Cd-based quantum-dot light-emitting diodes (QLEDs), a reduced hole-injection barrier at the hole transport layer (HTL)–quantum-dot (QD) interface generally leads to enhanced device eff...
Comparative analysis of voltage losses in perovskite and GaAs solar cells at low temperatures
This study presents a comparative analysis of the open circuit voltage behavior of perovskite vs gallium arsenide (GaAs) solar cells at low temperatures relevant to space applications. While GaAs sola...
Bragg-grating engineering enables deterministic resonance control in an on-chip THz filter
On-chip filters are important for integrated terahertz (THz) communication and sensing systems. Deterministic control of resonance multiplicity in compact devices enables flexible spectral filtering....
Synergistic Ti doping and carbon-coating to modulate Na+ migration channels in Na2FeP2O7 cathode for fast sodium storage
Phosphate salt Na2FeP2O7 has emerged as a potential candidate material for sodium-ion batteries due to its high stability in the triclinic structure and low cost. However, its practical implementation...
Periodically tunable continuous-wave intracavity diamond Raman laser via birefringent filter
We report a periodically tunable continuous-wave intracavity diamond Raman laser employing a rotating quartz birefringent filter (BRF). Experimental results reveal a counter-intuitive phenomenon where...
Dislocations in (011)-oriented vertical Bridgman <b> <i>β</i> </b> -Ga2O3 substrates
Dislocations in (011)-oriented β-Ga2O3 substrates grown by the vertical Bridgman method was investigated using x-ray topography (XRT), combined with x-ray reticulography. Transmission XRT reveals disl...
Gd2O3-induced electronic modulation of Cu for efficient oxygen reduction in aluminum–air batteries
A Gd2O3-modified copper-based composite catalyst (Gd2O3–Cu/C) was developed via solvothermal preassembly and high-temperature pyrolysis to overcome the sluggish oxygen reduction reaction (ORR) kinetic...