Applied Physics Letters
Articles in this Issue
Acoustically coupled MEMS transducer pairs with loss and gain
This work investigates the dynamics and experimentally extracts the acoustic coupling between a pair of microelectromechanical ultrasound transducers (MUTs) that are immersed in water and acoustically...
Piezovalley effect in altermagnetic Fe2WS4 and Fe2WS2Se2 monolayers
Altermagnets, which arise from the alternating crystal environment and have spontaneous spin-splitting with zero net magnetization, provide a unique opportunity for potential spintronics or valleytron...
Detection of abnormal movement in Parkinson's disease using time irreversibility and entropy
This work aims to determine how entropy and time irreversibility can help differentiate between healthy and parkinsonian movement. Acceleration signals from control subjects and patients with Parkinso...
Reconfigurable monolithic photonic circuit on III-nitride chip
With respect to a III-nitride monolithic photonic circuit comprising multiple quantum well (MQW) diodes, InGaN/GaN MQW transmitters/boosters convert pulse optical signals into emitted light, whereas M...
Batch-fabricated PDMS templates for the robotic transfer of 2D materials
Robotic stacking of van der Waals heterostructures has been at the verge, thanks to the convergence between artificial intelligence (AI) and two-dimensional (2D) materials research. Key ingredients to...
Dual-function Sb2S3/HfO2 memristor for reservoir computing and neural network learning via decoupled short- and long-term memory
Conventional computing architectures typically rely on separate devices to achieve dynamic sensing and long-term storage, leading to low integration density, high energy consumption, and significant d...
Charge-density wave-mediated soft phonon modes suppress the temperature dependence of lattice thermal conductivity in 2H-NbSe2
Layered NbSe2 has attracted extensive interest as a prototypical system where multiband superconductivity coexists with a charge-density wave (CDW) order. Here, using self-consistent phonon theory to...
Coexistence of topology and superconductivity in two-dimensional anti-van't Hoff/Le Bel bonded BeC3 monolayer
Two-dimensional topological superconductors combining nontrivial band topology with robust superconductivity remain rare in light-element systems. Here, we predict a thermodynamically stable BeC3 mono...
High-mobility magnetic two-dimensional electron gas with high Curie temperatures at Eu2O3/SrTiO3 interfaces
High-mobility spin-polarized two-dimensional electron gases (2DEGs) hold fundamental importance for the development of next-generation spintronic devices. In this work, we fabricate a high-quality epi...
Large critical current density Josephson <i>π</i> -junctions with PdNi barriers
We report large π-state critical current densities, Jc(π), in Nb/Pd89Ni11/Nb Josephson junctions at Pd89Ni11 thicknesses near the first π-state. We observe oscillations in the critical current with fe...
Cryogenic Q enhancement in 50 GHz piezoelectric resonators
Piezoelectric resonators are a critical component of many systems. Recent advances have increased the operation frequency of these resonators into the tens to hundreds of GHz; however, the performance...
Achieving near-zero thermal expansion in high-entropy ceramic (Ti1/3Zr1/3Hf1/3)Sc <i>x</i> Fe1− <i>x</i> Mo2VO12
Near-zero thermal expansion materials exhibit minimal volume changes under extreme temperature fluctuations, offering significant application value in high-precision instruments, optical equipment, sa...
Surface nanoprocessing with unfocused beams of high-energy femtosecond lasers: A tool to produce surface characteristics libraries
We demonstrate a single-shot method for probing ultrafast laser–matter interactions using unfocused multi-terawatt femtosecond beams. The intrinsic fluence inhomogeneity of the beams is exploited to a...
Dynamic terahertz focal planar scanning via cascaded metasurfaces
Terahertz (THz) planar focal spot scanning is critical for imaging, sensing, and optical routing, but traditional approaches suffer from bulkiness or limited tunability. Herein, we propose a cascaded...
Diverse nanostructures of bc8 silicon mediated by controllable transition kinetics of beta-Sn silicon
Metastable polymorphs of silicon exhibit direct and narrow band gaps, offering broad application potential. The transition kinetics in the formation of metastable Si have been extensively studied, but...
Bi2Ti2O7 modification-induced large strain characteristics in BNT-6BT piezoelectric ceramics
Lead-free sodium bismuth titanate and related compounds are promising piezoelectric materials. A comprehensive understanding of this series of materials remains a challenge, partly due to their struct...
Nonlinear absorption transition governed by exciton and defect states in 2D (PEA)2PbI4 from visible to near-infrared
The active control of nonlinear absorption (NLA), particularly the dynamic transition between saturable absorption (SA) and reverse saturable absorption (RSA), is essential for advanced photonics such...
Electrical control of polarization-resolved photodetection in GeSe/MoTe2 heterostructures for optoelectronic encryption
Polarimetric optical encryption enables parallel information channels and enhanced eavesdropping prevention capabilities, improving data transmission capacity and information security. However, conven...
Magnetotransport properties of Dirac semimetal ZrTe5 in the quantum limit
We report the magnetotransport properties of zirconium pentatelluride (ZrTe5) in the Dirac semimetal phase, focusing on its magnetoresistance behavior at low temperatures. Pronounced Shubnikov–de Haas...
Stabilization of Rydberg dissipative time crystals using a scanning Fabry–Pérot interferometer transfer lock
Stabilization of laser frequencies is critical for sensitive Rydberg measurements, including in applications such as dissipative time-crystal (DTC) dynamics, yet conventional approaches often require...
Gate-tunable polarization-sensitive photodetection based on in-plane anisotropic GeS single-crystal films
Group IV–VI monochalcogenides have attracted considerable interest for polarization-sensitive photodetection due to their pronounced chemical stability and photoelectric anisotropy. However, scaling h...
Mid-infrared interband cascade superluminescent diode with tunable spectral-width and monolithically integrated detector
This study reports a mid-infrared interband cascade superluminescent diode (ICSLD). By controlling the proportion of amplified spontaneous emission in the spectrum, we have achieved spectral width tun...
Observation of topological Hall effect in synthetic antiferromagnetic skyrmion system
Synthetic antiferromagnetic (SAF) skyrmions have emerged as promising candidates for next-generation high-speed and highly integrated spintronic devices owing to their exceptional properties, such as...
Three-coordinated Cu(I) complexes for electrochromic devices with high coloration efficiency
The development of efficient electrochromic materials is critical for advancing energy-efficient smart windows and next-generation display systems. In this study, three-coordinated heteroleptic Cu(I)...
Ultralow threshold polariton laser and vortex formation in an organic microcavity at room temperature
Exciton polaritons represent hybrid bosonic quasiparticles that emerge from the strong coupling between excitons and photons. Their distinctive properties provide a robust platform for investigating l...