Applied Physics Letters
Articles in this Issue
High power and feedback-resilient single-state operation in an InAs/GaAs quantum dot laser
This paper demonstrates the exceptional optical feedback resilience of an InAs/GaAs quantum dot Fabry–Pérot laser, enabled by an unusually large excited state to ground-state threshold current ratio....
Erratum: “Ultralow dark-current self-power VS2/SiO2/Si MIS photodiode for highly sensitive broadband detection” [Appl. Phys. Lett. <b>127</b> , 183301 (2025)]
Theoretical insights into β-Ga2O3/diamond heterojunction interfaces: Surface selection, band alignment, and interfacial interaction
β-Ga2O3/diamond heterojunctions demonstrate considerable potential for applications in electronics and optoelectronics. However, theoretical investigations into their electrical properties remain larg...
2D–3D heterointerface regulation of van der Waals epitaxy of AlN on graphene for wafer-scale exfoliation
In this work, we present a three-step van der Waals epitaxy method to grow a transferable single-crystalline AlN membrane on untreated bilayer graphene by using two-dimensional (2D)/three-dimensional...
Gelatin electric double-layer side-gated FETs: Capacitive coupling mechanism for label-free detection of coptis alkaloids
Coptis chinensis (cc) was widely used in traditional Chinese medicine for the treatment of various diseases, and its quality evaluation directly influenced clinical efficacy and safety. Traditional an...
THz mixing of high-order harmonics using YBa2Cu3O7− <i>δ</i> nanobridges
Superconducting materials are key for technologies enabling a large number of devices, including THz wave mixers and single-photon detectors, though they are limited at very low temperatures for conve...
Self-powered broadband photodetector with intelligent sensing based on a mixed-dimensional TiS3/WSe2 van der Waals heterojunction
Broadband, high-efficiency, and low-power multifunctional integrated photodetectors are essential for advanced applications, including imaging, optical communication, and remote sensing. Photodetector...
Extracting deeply buried thermal resistance in Au/Au-bonded thick Si-on-diamond
Efficient thermal management is essential for high-performance computing and AI chips to prevent overheating and ensure reliable operation. Metallic interlayers, known for their high thermal conductiv...
Optimization of pixelated GaAs/AlGaAs x-ray downconversion devices
The concept of semiconductor frequency conversion offers an alternative imaging approach, which eliminates the need for connecting a readout circuit. In this work, we present an improved architecture...
Circuit realization of quadrupole topological insulator coexisting edge and corner states
Two-dimensional higher-order topological insulators (2D-HOTIs) have recently attracted significant attention, which feature topologically protected corner states and trivial edge states, manifesting b...
Deep brain stimulation electrode implantation guidance and postoperative monitoring via microwave-induced thermoacoustic imaging
Accurate electrode implantation and postoperative monitoring are essential for achieving optimal therapeutic outcomes in deep brain stimulation (DBS). Current techniques still struggle to meet key req...
Fluorescence lifetime imaging with cost-efficient time-correlated photon counter
Fluorescence lifetime measurement is a versatile tool for studying the dynamics of biological, chemical, and quantum systems. However, commercially available time-correlated single-photon counting sys...
Anomalous magnetic field-dependent spin dynamics in Gd0.3Ho0.7FeO3 single crystal near the ordering temperature of rare-earth ions
Understanding the magnon dynamics near the rare-earth ion ordering temperature is crucial for revealing the complex exchange interactions between R3+ and Fe3+ ions in RFeO3 (where R is a rare-earth el...
Topological bands in helical magnetic metals
In crystalline systems with a superstructure, energy bands can be non-periodic over the Brillouin zone yet form a gapless, periodic structure as a whole—a covering in topological terms. It is proved t...
Observing femtosecond laser damage failure of a MoS2 thin film as an ultrafast photoacoustic transducer
Utilizing a femtosecond laser pump–probe system, we perform a failure test of laser damage with a 55-nm-thick MoS2 as an ultrafast photoacoustic transducer. By increasing pump laser fluence until the...
Control of magnon frequency combs in magnetic rings
Using Brillouin light scattering microscopy, we study the rich dynamics in magnetic disks and rings governed by nonlinear interactions, focusing on the role of vortex core dynamics on the spin-wave ei...
Temperature-dependent band renormalization in half-Heusler <i>M</i> NiSn and <i>M</i> CoSb ( <i>M</i> = Ti, Zr, Hf)
Temperature-dependent band structures are crucial for optimizing the thermoelectric performance of half-Heusler materials operating at elevated temperatures. Here, we systematically investigate the ba...
Low-resistance graded AlGaN contact to high Al-content AlGaN PolFET grown by ammonia molecular beam epitaxy
To realize ultra-wide bandgap AlGaN transistors for high-frequency, high power applications, it is imperative to minimize the access resistance to the conductive, high-mobility channel to achieve high...
Spin-chirality-dependent modulation of topological gap, Chern number, and valley polarization in monolayer kagome lattice Cr3Se4
Kagome materials exhibit unique electronic properties, such as the quantum anomalous Hall effect. The control of Chern numbers is critical for quantum device manipulation, but existing research has ma...
Characterization of ultrathin nickel films deposited by thermal laser evaporation
Thermal laser evaporation is a physical vapor deposition technique of increasing interest because of its ability to evaporate essentially any solid element, even the most refractory such as W. However...
Fluorination-enabled synergistic engineering of lattice and interface in Na2FePO4F cathode for enhanced sodium-ion storage
The development of sodium-ion batteries is limited by the intrinsic kinetics and stability of cathode materials. Herein, we develop a synergistic engineering strategy for concurrently regulating the l...
High-efficiency Pt75Au25-based spintronic terahertz emitters
Spintronic terahertz emitters (STEs) generate broadband THz radiation via ultrafast spin–charge conversion in magnetic multilayers, offering spectral coverage beyond that of photoconductive antennas a...
Exceptional fine structure in the photoluminescence excitation spectra of perovskites: Evidence for Rashba splitting?
In this communication, distinctive photoluminescence excitation (PLE) spectral properties in films of methylammonium lead tribromide grown on yttrium-stabilized zirconium oxide in the presence of an i...
Ferroelectric control of magnetic properties in single metallocenes
Tunable quantum states and long spin-relaxation times are crucial requirements for the application of single-molecule magnets (SMMs) in spintronics and quantum information technologies. Here, we take...
Deep-subwavelength (∼λ/160 000) terahertz sensing with an ultrathin flexible metasurface
Terahertz (THz) sensing of deep-subwavelength dielectric films remains a formidable challenge due to the stark mismatch between the long wavelengths of terahertz radiation and the nanoscale thicknesse...