Applied Physics Letters
Articles in this Issue
Highly efficient microwave emission from DC-biased femtosecond laser filament in air
We report observation of microwave radiation from the femtosecond filament in air biased by 10-kV/cm static transverse field with an amplitude ∼ 2 orders of magnitude higher than in the unbiased or we...
Frequency stabilization via backbone curve feedback
High-performance mechanical resonators are essential for precision sensing and time-keeping, yet their performance is fundamentally limited by nonlinear mechanical effects at high oscillation amplitud...
Bandwidth of cadmium arsenide-based photothermoelectric detectors in the long-infrared wavelength regime
Photodetectors, which harness the photothermoelectric effect (PTE), can operate at mid-to-long-infrared wavelengths at room temperature and without an applied bias. Typical operating speeds of PTE-bas...
9.8 W continuous-wave laser from an Nd:YMgB5O10 crystal and its passively Q-switching laser performance
This paper systematically reports the continuous-wave (CW) and passively Q-switched pulsed laser performance of an Nd:YMgB5O10 (Nd:YMB) crystal under laser diode pumping. A CW output power of 9.8 W wa...
Microstructure-controlled vortex phases and two-phase superconductivity in (TaNb)0.7(HfZrTi)0.5 revealed by ac magnetostrictive coefficients
We investigate flux dynamics in the high-entropy alloy superconductor (TaNb)0.7(HfZrTi)0.5 after annealing (as-cast, 500, 550, and 1000 °C) using a sensitive ac composite magnetoelectric method that m...
The bulk photovoltaic effect in one-dimensional tellurium nanowires for self-powered broadband polarization-sensitive photodetection
The bulk photovoltaic effect (BPVE) provides a promising route toward bias-free, high-efficiency photodetection, yet its realization in low-dimensional anisotropic semiconductors remains largely unexp...
Ag-based chalcogenide quantum dots for near-infrared to short-wave infrared optoelectronics
Silver chalcogenide colloidal quantum dots, including binary Ag2Q and ternary AgBiQ2 (Q=S, Se, Te), represent promising eco-friendly alternatives for near-infrared to short-wave infrared optoelectroni...
Doping-dependent carbon atom transient ionization behavior and its impact on RON stability in GaN-on-Si HEMTs
Carbon doping is widely employed to form semi-insulating buffers and is regarded as detrimental to the on-resistance stability of GaN-based high-electron-mobility transistors due to off-state-stress-i...
Depolarization modulated tunneling in ferroelectric tunnel junctions
We investigate charge tunneling in asymmetric junctions comprising a ferroelectric barrier BaTiO3 with a common La0.7Sr0.3MnO3 bottom electrode and various metallic top electrodes. Quantitative analys...
Crystallographic registry in epitaxial V3O5 thin films
Crystallographic orientation plays a central role in determining transport properties in correlated oxides with low-hysteresis metal–insulator transitions. Here, V3O5 thin films were grown on Al2O3 (0...
Synergistic dual built-in electric fields enabled self-powered humidity sensors based on MXene/MoS2 van der Waals heterostructures
Developing zero-power humidity sensors is critical to overcoming battery limitations in wearable health monitoring. Here, we report a high-performance self-powered humidity sensor based on MXene/MoS2...
Beat-frequency sub-terahertz generation via photomixing using dual continuous-wave multimode laser diodes
Terahertz time-domain spectroscopy (THz-TDS) is an advanced technique for material evaluation. TDS commonly uses femtosecond pulsed lasers as the light source. Recent studies have shown that continuou...
Laser direct writing assisted fabrication of CsPbBr3/graphene/Ag nanocomposites
Composite materials of inorganic perovskites and graphene have proven to be an effective strategy for achieving excellent optical and electrical properties. Building upon this foundation, we introduce...
Impact of V-defects on current flow and recombination pathways in long-wavelength GaN-based light-emitting diodes
In long-wavelength GaN-based light-emitting diodes (LEDs), {101¯1} V-defect sidewalls provide a current pathway for lateral electron and hole injection into the (0001) quantum wells (QWs). However, ex...
Spintronic terahertz energy detection via intrinsic magnetization rectification
We demonstrate electrically detected spintronic terahertz energy detection based on ferromagnet/heavy-metal bilayers operated under continuous-wave terahertz excitation. Using zero dc bias current and...
Ferromagnetic-like spin splitting induced tunneling magnetoresistance and exchange bias in fully compensated ferrimagnetic tunnel junctions
Achieving giant tunneling magnetoresistance (TMR) in antiferromagnetic (AFM) tunnel junctions remains a central challenge in AFM spintronics. Conventional antiferromagnets suffer from insufficient spi...
A high-throughput screening framework identifies Z-scheme MXene heterojunctions approaching 80% solar-to-hydrogen efficiency
In the field of photocatalytic water splitting, Z-scheme heterojunctions exhibit more efficient carrier migration and better photocatalytic performance than single-component materials or Type II heter...
AlGaN/GaN core–shell nanofin diodes on Si substrates for vertical GaN electronics
We demonstrate plasma-assisted MBE selective-area growth (SAG) of GaN/AlGaN core–shell structures on Si(111) as a path to vertical GaN devices. The SAG enables the full vertical and uniform core–shell...
Oscillator strength-driven machine learning for organic maximum absorption wavelength prediction
Although organic chromogenic materials are critical for optoelectronic displays and imaging, accurate prediction of their maximum absorption wavelength (λmax) remains challenging: quantum chemical met...
Concentration-dependent regulation of Cu/diamond interfacial bonding by transition metal doping: A first-principles study
Cu/diamond composites face significant challenges due to poor interfacial bonding, which transition metal doping can mitigate. However, the critical role of dopant concentration remains poorly underst...
Hot-electron bolometric mixer with negative differential resistance
We demonstrate that the conversion gain of a superconducting hot-electron bolometer (HEB) mixer can be increased by biasing the device within the negative differential resistance (NDR) region of its c...
Ni-incorporated CoFe Prussian blue analog: Synergizing Ni active sites and spin-state modulation for efficient ethanol oxidation
As the global energy landscape shifts toward sustainable hydrogen production, the ethanol oxidation reaction (EOR) has emerged as a superior alternative to the sluggish oxygen evolution reaction. In t...
Effects of 1,6-Bis(trichlorosilyl)hexane on the electrical characteristics of amorphous indium–gallium–zinc oxide thin-film transistors
This study investigates the direct effects of the cross-linker 1,6-bis(trichlorosilyl)hexane (BTCSH) with the surface of amorphous indium–gallium–zinc oxide (IGZO) and its consequences for thin-film t...
Robust orbital-angular-momentum-encoded information transmission in multimode fiber against slowly varying stochastic dynamics
Large-core multimode fibers (MMFs) hold significant potential for long-distance transmission of high-capacity spatial information, such as orbital-angular-momentum (OAM) encoded data, between two arbi...
Dispersion limits for attosecond coherent synchrotron emission
Attosecond coherent synchrotron emission from relativistic plasma surfaces is a promising route to intense UV and X-ray bursts that can be transmitted through solid-density targets without external sp...