Applied Physics Letters
Articles in this Issue
Ferroelectric/electrolyte synergistically modulated IGZO synaptic transistor with tunable plasticity for reservoir computing
Electrolyte-gated transistors are promising candidates for neuromorphic devices due to their operational similarity to biological synapses. However, undesirable conductance update is caused by the unc...
A dual-wavelength continuous-wave mirrorless laser in thermal rubidium vapor
Mirrorless lasers avoid cavity-pulling effects by generating stimulated emission directly from an atomic gain medium without an optical cavity. However, most superradiant or superfluorescent emissions...
Nonlinear ferromagnetic resonance linewidth broadening due to the interlayer exchange coupling in synthetic antiferromagnets
We report on an unusual extrinsic contribution to the broadening of the ferromagnetic resonance (FMR) linewidth in Co/Ru/Co synthetic antiferromagnets. In samples with antiferromagnetic (AFM) interlay...
Toward high-efficiency repumping for ultra-stable Yb inner-shell optical lattice clocks
Ytterbium inner-shell optical clocks, based on transitions to the long-lived 4f135d6s2 (J = 2) state, are a promising platform for metrology and fundamental physics studies but have been hindered by i...
Broadband power enhancement by multimodal coupling in a MEMS dual-cantilever piezoelectric energy harvester
This work reports a dual-cantilever-coupled multimodal piezoelectric energy harvester (DCC-PEH) designed for enhanced broadband power generation. By kinematically integrating a low-frequency cantileve...
Time-domain waveform-informed photoacoustic microscopy
Conventional photoacoustic microscopy (PAM) relies on scalar amplitude projection and struggles with weakly absorbing samples due to weak signal generation. We present waveform-informed photoacoustic...
Ferromagnetism and magnetization switching of 2D nonlayered CrTe grown by chemical vapor deposition
Two-dimensional (2D) magnetic materials have shown potential for maintaining intrinsic magnetism and hysteresis loops, which could greatly accelerate the development pace in novel spintronic devices....
Effects of metal doping on defect dynamics in graphene: <i>In situ</i> TEM observation and persistent homology-based structural analysis
Defect engineering is pivotal for tailoring graphene properties, yet conventional analysis often overlooks global structural connectivity—specifically, interconnection of individual carbon polygons to...
Effects of NaCl raw material on structure and properties of (Bi0.5Na0.5)0.94Ba0.06Ti(O,Cl)3
ABO3 perovskite ferroelectric ceramics were usually synthesized by using oxide and/or carbonate raw materials to form cation solid solutions. Here, we chose (Bi0.5Na0.5)0.94Ba0.06TiO3 (BNBT) as a rese...
Ga2O3/IGZO heterojunction-based synaptic transistor for neuromorphic visual perception
A neuromorphic synaptic transistor based on a Ga2O3/IGZO heterojunction is fabricated using radio frequency magnetron sputtering, demonstrating optical-stimulus-dependent postsynaptic current response...
Understanding the libration spectra of levitated nanodumbbell rotors
Shoulder-like features are often observed in the libration power spectral density of optically levitated nanodumbbell rotors, yet their origin remains unclear. By modeling both deterministic and therm...
Low energy rescattering plateau in strong field photoemission from CNT-Au nanostructure
A distinct low energy rescattering plateau at 1–2 eV is observed in strong field photoelectron emission from carbon nanotubes (CNTs)-Au composite nanostructures. In contrast, bulk Au exhibits a conven...
Structural control of molybdenum oxide by post-treatment processes
To investigate the crystallization behavior and controllability of the crystal structure of MoO3, we conducted crystallization of amorphous MoO3 (a-MoO3) and a structural phase transition of polycryst...
First-principles second-harmonic generation of reconstructed monolayer Bi2O3 phases
Monolayer Bi2O3 has recently attracted interest as a candidate atomic-thickness p-type oxide semiconductor, but its relaxed monolayer structures and symmetry-dependent nonlinear optical responses rema...
Gain-saturated 69.8 nm neon-like argon laser pumped by capillary discharge at a high main-pulse current of 19 kA
Extreme ultraviolet (EUV) lasers based on capillary discharge offer a compact and efficient short-wavelength source; yet, compared with the 46.9 nm laser well-established in practical applications, ac...
Low-phase-noise millimeter-wave generation toward high-speed communications using an externally optically injected gain-switched laser comb with a noise-like spectrum
Low-phase noise, widely tunable millimeter-wave (MMW) sources are crucial for future 6G communications to alleviate spectrum congestion and support high-speed transmission. In this work, we propose a...
A deep insight into electronic and ionic transport properties of solid-state sodium electrolyte Na3SbSe4
Low electronic and high-ionic conductivities are indispensable for viable solid-state electrolytes (SSEs), which are key components of all-solid-state batteries. Here, we provide a deep atomistic insi...
Hot-assisted spin-coating for ultrasmooth PbS colloidal quantum dot film in high-performance NIR photodetectors
Lead sulfide (PbS) colloidal quantum dots (CQDs) exhibit significant promise for near-infrared (NIR) photodetectors owing to their size-tunable bandgap and facile solution processability. However, wit...
MD-modified DMM analysis of thermal boundary resistance in diamond/GaN heterostructures
The development of gallium nitride (GaN) devices toward higher power density and frequency has been seriously limited by self-heating effects, which significantly impact device performance. Although t...
Antiferromagnetic ordering enhanced magnetic damping in Mn2Au/CoFeB bilayers
Antiferromagnets (AFMs) hold significant potential for spintronic devices owing to their insensitivity to external magnetic fields and the absence of stray fields. Beyond these inherent advantages, an...
Low current-density THz quantum-cascade lasers with three-well period, epitaxially grown with As2 and As4 sources
We report terahertz (THz) quantum-cascade lasers (QCLs) based on a three-well GaAs/AlGaAs active region with resonant-phonon depopulation that achieve high operating temperatures at low current densit...
Multiple polymer memristors with homeostatic plasticity through ionic global gating
Organic neuromorphic hardware has attracted significant interest because it readily offers excellent biocompatibility and supports biomimetic ionic signaling. However, emulating a combination of Hebbi...
Precise control of crystallography and magnetism in iron-nickel thin films transformed by a focused ion beam
Focused ion beam irradiation of metastable Fe78Ni22 thin films grown on Cu(001) substrates results in the localized transformation of the originally paramagnetic, face-centered-cubic continuous film i...
Smart Cut™ technology for the integration of diamond Schottky diodes on silicon substrate
Diamond is a promising candidate for next-generation high-power electronic devices due to its exceptional thermal and electrical properties. This work demonstrates homoepitaxial regrowth on Smart Cut™...