Applied Physics Letters
Articles in this Issue
Thermally stable multistate characteristics in multidomain-driven magnetic tunnel junctions
The intermediate resistance states observed between the P and AP states of magnetic tunnel junctions (MTJs) have traditionally been considered detrimental to device reliability. This work evaluates a...
Liquid metal display and quasi-E-paper
Gallium-based liquid metal offers exciting possibilities for soft optical interfaces, yet current approaches often rely on the introduction of heterogeneous materials. Here, we report an electrochemic...
Breaking the thermal–dielectric trade-off in high-temperature polymers via transfer learning
High-temperature capacitive energy storage demands dielectric polymers that integrate high thermal conductivity with excellent electrical insulation to mitigate thermal runaway induced by Joule heatin...
Phononic colloidal glasses
Colloidal glasses composed of self-assembled nanoparticles can control light transport through photonic bandgaps and non-iridescent structural color, yet their phononic properties remain largely unexp...
LLM-driven discovery for carbon allotropes with bond-network entropy
The discovery of novel carbon allotropes with tailored thermal and mechanical properties is critical for advanced thermal management. However, exploring the vast configurational space of carbon using...
Broadening thermochromic switching into the visible and NIR by incorporating Au-doped TiO2 beneath VO2 films
We report a multilayer architecture in which Au nanoparticles embedded in a crystalline anatase TiO2 matrix are incorporated beneath VO2 thin films. This configuration promotes the formation of the mo...
Millimeter-wave control of copper diffusion in BaTiO3 for ceramic capacitors
The use of copper (Cu) electrodes in multilayer ceramic capacitors (MLCCs) is highly attractive due to its low cost and electrical resistivity compared with nickel (Ni). However, Cu easily oxidizes an...
Determination of composition, strain, and layer thickness of germanium-tin superlattices using x-ray diffraction
We apply an approach that uses x-ray diffraction (XRD) and dynamical scattering theory to determine the resulting elemental compositions of a Ge1−ySny/Ge1−xSnx superlattice after growth by simulating...
Nonlinear guided exciton-polaritons in a van der Waals layered waveguide
Layered van der Waals materials offer promising opportunities for on-chip waveguiding and the development of integrated photonic circuits. In the strong light–matter coupling regime, their nonlinear r...
Investigation of AlN back barrier/GaN HEMTs with ultra-thin GaN channel for high-frequency and high-voltage applications
AlN back-barrier thickness physically governs ultrathin-channel GaN high-electron-mobility transistor (HEMT) performance by dictating a competition between material states. At 440 nm, the AlN back bar...
DMF-free co-solvent doctor-bladed FA0.6MA0.4PbI3 perovskite solar cells and modules under ambient conditions
Perovskite solar cells (PSCs), recognized for their high efficiency and scalable manufacturing potential, face significant challenges in achieving uniform, high-quality large-area films via ambient do...
Tuning magnetic anisotropy and Curie temperature in two-dimensional half-metal CoOBr via alloying strategy
Two-dimensional (2D) half-metallic materials hold great promise for spintronic applications, yet their practical implementation is often hindered by relatively low Curie temperature (Tc) and limited m...
Sensor-free, self-regulating thermal switching via anomalous Ettingshausen effect and spin reorientation in DyCo5
We propose a sensor-free, self-regulating thermal switch that combines the anomalous Ettingshausen effect with a temperature-driven spin reorientation transition (SRT) in the rare-earth cobalt compoun...
Experimental observation of enhanced quantum-entangled two-photon absorption fluorescence at milliwatt pump power levels
Optical technologies based on two-photon absorption can provide high resolution and deep tissue penetration but require very high peak power intensities because of the extremely small absorption cross...
Effects of pre-deposition annealing prior to gate insulator deposition in planar AlGaN/GaN MIS-HEMT with a thin AlGaN barrier layer
A planar-type enhancement-mode transistor, termed an extrinsically electron induced by a dielectric (EID) AlGaN/GaN metal–insulator–semiconductor high-electron-mobility transistor (HEMT), is a promisi...
Giant spin–orbit torques in W/MgO nanostructures for energy-efficient SOT-MRAM applications
High critical switching current density (Jc) and limited charge-to-spin conversion efficiency [spin–orbit torque (SOT) efficiency, ξSOT] of heavy metal-based SOT channels are the two key challenges fo...
Graphene-based thermal interface materials with high through-plane thermal conductivity inspired by Baumkuchen
To enhance the thermal management capabilities of epoxy composite, inspired by Baumkuchen, a simple, scalable, and environmentally friendly process was proposed. The graphene strips, without any chemi...
A dual-functional additive for crystallization regulated and defect passivated stable inverted perovskite solar cells
The main problems holding back inverted perovskite solar cells (PSCs) are poor crystal formation and too many defects inside the perovskite layer. We address both issues by introducing 4-aminobutylpho...
Photo-induced anomalous Hall effect in Co/WS2 bilayer
We report the observation of a photo-induced anomalous Hall effect in a ferromagnetic (FM) cobalt (Co)/tungsten disulfide (WS2) Schottky heterostructure. Unlike previously reported transition metal di...
Irradiation driven magnetism enhancement in Y-doped HfO2 films
HfO2-based ferroelectric films are regarded as core materials for next-generation nonvolatile memories and spintronics owing to their CMOS compatibility and exceptional ferroelectricity. Yet, the minu...
Optoelectronic synapse based on a BiI3/Bi2Se3 van der Waals heterostructure for neuromorphic visions
In this paper, we demonstrate a fully optical neuromorphic vision sensor based on a BiI3/Bi2Se3 van der Waals heterostructure grown by sequential vapor deposition. High-quality vdW epitaxy produces st...
Inelastic-stress-induced threshold instability and mobility degradation in AlN/GaN MIS-HEMTs on Si
This work investigates the impact of stress-induced effects on the stability of AlN/GaN MIS-HEMTs on Si employing PECVD-SiN as a passivation layer. DC and temperature-dependent C–V/I–V measurements to...
Magnetic aftereffect and Barkhausen jumps in thin altermagnetic Mn5Si3 films
In ferromagnets, the anomalous Hall effect (AHE) can exhibit time-dependent relaxation, including magnetic aftereffect and Barkhausen jumps, and thus provide insights into magnetic susceptibility and...
Double drift layers to minimize on-resistance in 2.7-kV <i>β</i> -Ga2O3 (001) vertical trench Schottky barrier diodes
Improved specific on-resistance (Ron,sp) in beta-gallium oxide (β-Ga2O3) trench Schottky barrier diodes (TSBDs) is achieved without the usual trade-off of reduced breakdown voltage, enabled through th...
Latent transition unlocks visible-to-ultraviolet upconversion for covert optical security
Upconversion luminescence (UCL) is transforming the landscape of optical anti-counterfeiting, particularly in the ultraviolet (UV) range, where invisible emissions enable highly advanced security feat...