Applied Physics Letters
Articles in this Issue
Direct measurement of the electron wind force in cobalt nanowires
Copper back-end-of-line interconnects have been the industry standard for decades, but copper's susceptibility to electromigration failure has motivated a search for alternatives. While cobalt's resis...
Stress engineering in ferroelectric hafnium oxide for tuning epitaxial orientation
The development of next generation computing paradigms and memory devices relies on exploiting the unique properties of ferroelectric materials. Hafnium oxide-based ferroelectrics, which are highly co...
Enhanced thermal performance of AlN/GaN/AlN XHEMTs on bulk AlN by suppression of phonon-boundary scattering
AlN/GaN/AlN high electron mobility transistors (HEMTs) have demonstrated exceptional potential for surpassing the electrical limitations of conventional AlGaN/GaN HEMTs. This study investigates the th...
Thickness scaling and ferroelectric switching in wurtzite structure zinc magnesium oxide thin films
This study reports the thickness scaling of sputtered ferroelectric Zn0.61Mg0.39O (ZMO) thin films down to 43 nm. Encapsulated IrO2/ZMO/Ir capacitors exhibited switchable polarizations exceeding 50 μC...
Magnetic phase transitions in Sr-defective monolayer FeSe/SrTiO3 interfaces: A first-principles study
The significantly enhanced superconducting transition temperature (Tc) observed at the FeSe/SrTiO3 (FeSe/STO) interface has garnered substantial attention over the past decade. Numerous experiments ha...
Tuning magnetocaloric effect of monolayer via flexomagnetism
Flexomagnetism, a coupling between strain gradient and magnetization, offers an alternative pathway to tune the magnetocaloric effect (MCE) by leveraging huge strain gradients in monolayers. Herein, w...
Terahertz emission from Pt/BiFeO3 heterostructures
We demonstrate a terahertz (THz) emitter based on Pt/BiFeO3 heterostructures, leveraging the ultrafast strain-wave-driven spin dynamics for coherent THz generation. Femtosecond laser pulses absorbed i...
Epoxy-driven carbon host engineering enables ultrafast wetting and dendrite-free K metal anode
K metal anodes are plagued by uncontrolled dendrite growth and interfacial instability, severely limiting their practical viability. To address this, we engineer a carbon paper host with surface epoxy...
Negative bias temperature stress-induced threshold voltage instability and mobility degradation in SiC PMOS devices
This study reveals a fundamental difference in the degradation mechanisms of 4H-SiC PMOS and NMOS devices under negative bias temperature stress. While NMOS devices exhibit substantial electron mobili...
High-efficiency SHG and polarization manipulation of femtosecond higher-order Poincaré sphere beam
Nonlinear frequency conversion is a well-established technique for extending the laser wavelength range. However, achieving nonlinear frequency conversion and polarization manipulation for vector beam...
Tuning the electronic properties of graphene via embedding diborane molecules
Tuning the gapless and isotropic Dirac electron behavior in graphene remains an active research pursuit. Recently, a study revealed that the on-surface synthesis of zigzag graphene nanoribbons embedde...
Giant perpendicular magnetic anisotropy in Mo/Boron-rich CoFeB/MgAl2O4 structure
Perpendicular magnetic tunnel junctions (p-MTJs) with perpendicular magnetic anisotropy (PMA) are key devices for scaling magnetoresistance random access memories down to ∼10 nm. However, the magnetic...
Dipole modulated switching in an energy-efficient flexible organic bilayer memristor
An electroforming-free and self-compliance flexible organic memristor has been developed using an organic–organic bilayer interface. A phase-separated 6,13-bis(triisopropylsilylethynyl)pentacene (TP):...
Stabilization of elastoviscoplastic flow via gas-assisted interfacial slip
The suppression of interfacial instabilities in elastoviscoplastic fluids remains a crucial challenge in confined flow physics. In this work, numerical simulations are performed on the extrusion of el...
High-entropy negative thermal expansion oxide with thermally enhanced upconversion luminescence
High-entropy (HE) materials, renowned for their exceptional chemical and physical properties, have attracted growing interest due to their broad applications across various fields. In this work, we re...
Antisite defect-mediated hot carrier cooling in halide double perovskite Cs2AgBiCl6: Microscopic role of electron–phonon coupling
The intrinsic antisite defects on the B-site (BiAg and AgBi) impose fundamental limits on the performance of silver-bismuth halide perovskite-based optoelectronic and photovoltaic devices. Through com...
High-performance <b> <i>β</i> </b> -Ga2O3 vertical diodes integrating metal-interlayer-semiconductor architecture and mesa termination
In this Letter, we report on high-performance β-Ga2O3 metal-interlayer-semiconductor (MIS) diodes featuring anode self-aligned mesa terminations and ultra-thin NiO as interlayers. The polycrystalline...
Plasmonic coupling driven spectral and sensitivity evolution in TIR-excited discrete AuNP arrays
Localized surface plasmon resonance (LSPR) in discrete nanoparticle monolayers is difficult to control because disorder and aggregation obscure the link between microscale coupling and macroscopic spe...
Laminar-flow-based sound absorption with a single Hilbert curve surpassing the Rozanov bound
Advances in metamaterials, additive manufacturing, and computational design have enabled significant progress in airborne sound absorption. However, most absorbers still rely on two conventional mecha...
Probing the features of electron dispersion by tunneling between slightly twisted bilayer graphene sheets
Tunneling conductance between two bilayer graphene (BLG) sheets separated by 2 nm-thick insulating barrier was measured in two devices with the twist angles between BLGs less than 1°. At small bias vo...
Ultrahigh-efficiency solar-blind ultraviolet detection with a <b> <i>β</i> </b> -Ga2O3/Si heterojunction
To overcome the limitations of low responsivity (R) and suboptimal spectral selectivity inherent in silicon (Si)-based solar-blind ultraviolet (SBUV) photodetectors (PDs), as well as the challenges po...
A hydrogen-bonding anchoring strategy for buried interface passivation toward enhanced efficiency and stability of inverted perovskite solar cells
Buried interface defects in perovskite solar cells (PSCs) remain one of the key factors limiting the efficiency and stability of the devices. Various passivation strategies for reducing buried interfa...
Electro-optically co-modulated ZnS synaptic memristor for neuromorphic recognition systems
Memristor-based neuromorphic computing offers a revolutionary strategy to address the limitations of traditional computing architectures. Developing synaptic memristors co-modulated by electrical and...
Anderson localization of electrons in high Fe-doped transition metal dichalcogenide 1T-Fe0.4Ta0.6Se2 single crystals
We report the synthesis of 1T-Fe0.4Ta0.6Se2 single crystal along with its magnetic and transport properties. Magnetic susceptibility and magnetization measurements reveal anisotropic behavior with no...
Preparation and characterization of zirconium-doped indium oxide conducting films with high infrared transparency
This work reports the zirconium-doped indium oxide (IZRO) transparent conductive thin films on infrared optical quartz glass (JGS-3) substrates via room-temperature RF magnetron sputtering. The effect...