Applied Physics Letters
Articles in this Issue
Improving electron mobility in InAs quantum wells on GaAs by removing bunched surface steps generated in strain relaxation
The effect of surface smoothing in the heteroepitaxy of InAs quantum wells on GaAs(001) is investigated using transmission electron microscopy. While the stress fields cause the relaxation of the latt...
Electron transport in N-polar AlGaN:Si films grown by MOVPE on annealed and sputtered AlN templates
N-polar AlGaN films have the potential to improve the performance of optoelectronic and electronic devices, owing to their reversed polarization electric field orientation when compared with their met...
Controlling thermoelectric properties of epitaxial GeSn film/Si by tuning strain and composition
We develop compressively-strained epitaxial Ge1−xSnx films with large x (>0.1) on Si substrates. Therein, large x and compressive biaxial strain cause a band convergence by movement of Γ valley...
Identifying high-energy electronic states of NV− centers in diamond
The negatively charged nitrogen-vacancy center in diamond is a prototype photoluminescent point defect spin qubit with promising quantum technology applications, enabled by its efficient optical spin...
Graphene enhanced resonant Raman spectroscopy of gallium nitride nanocrystals
The scattering of lattice excitations (phonons) with the photoexcited charge carriers is of a major concern in optoelectronic devices. Here, the resonant Raman scattering will be utilized to study an...
Phase zonal reconstruction via differential metasurface
Phase reconstruction has a wide range of application in the field of optical measurement. A phase zonal reconstruction method using differential metasurface is proposed, where bias images in horizonta...
Thicker lubricant layer enhances the droplet mobility on lubricant-infused smooth surfaces
Droplets are highly mobile on lubricant-infused surfaces when droplet−lubricant phases are immiscible, and lubricant layer is stable. Recent studies have shown that the high droplet mobility is due to...
Enhanced electrocaloric effect in relaxor ferroelectric polymers through hot press processing
Electrocaloric relaxor ferroelectric polymers have been considered as dominant polymer materials for refrigeration applications. However, the magnitude of the electrocaloric effect remains relatively...
Unraveling weak interfacial coupling in NaCl/WSe2 heterostructures
Resolving and controlling interfacial coupling between transition metal dichalcogenides and dielectric layer in heterostructures are of great importance in various physical phenomena. Here, we establi...
Microwave dynamics of gated Al/InAs superconducting nanowires
Several experiments have recently reported on gate-tunable superconducting properties in metallic devices, holding promise for the realization of cryogenic switches, tunable resonators, and supercondu...
A unified approach for truncated and extended adsorbed liquid films in evaporating menisci
The morphology of evaporating menisci near the three-phase contact line region—whether characterized by a truncated adsorbed liquid film or an extended adsorbed liquid film—has been the subject of lon...
Hydrophilic direct bonding of (100) diamond and deposited SiO2 substrates
Diamond has emerged as a leading material for solid-state spin quantum systems and extreme environment electronics. However, a major limitation is that most diamond devices and structures are fabricat...
Investigation on high-order planar Hall effect in trigonal PtBi2
The trigonal PtBi2 (t-PtBi2) as a Weyl semimetal possessing triply degenerate points in its electronic bands near the Fermi level endows it with rich electronic properties. Previous studies have alrea...
The migration of Σ3{112} incoherent twin boundary step in face-centered cubic metals under uniaxial loading
Pure steps such as Σ3{112} incoherent twin boundary (ITB) steps often present along the coherent twin boundary regardless of deformation or annealing twins in metals with a face-centered cubic (FCC) s...
Harnessing sliding ferroelectricity for layer-polarized spin Hall effect in ZrX2 (X = Cl, Br, I) bilayers
Quantum layertronics investigates the interaction between the layer degree of freedom in 2D van der Waals materials and electron charge or spin, enabling innovative quantum device applications. Using...
Magnetic field-controlled nanoscale spin-wave vertical directional coupler
The directional coupler is a fundamental element of wave-based circuits. The state of the art for the spin-wave directional couplers consists mostly of macroscopic waveguides or two-dimensional planar...
Shining light in a heartbeat: Controlling cardiac bioelectricity with membrane-targeted photoswitches
The heart's rhythmic contractions are driven by bioelectric signals that coordinate the excitation and propagation of action potentials throughout the cardiac tissue. Maintaining precise control of th...
Separated reversal of spins in two spin sublattices and strong microwave absorption with adjustable broad bandwidth in SrFe10.4Zn0.8Sn0.8O19
The dynamical spin resonance stores a large amount of electromagnetic energy. Usually, it is a collective response of all exchange coupled spins. We observed two distinct spin resonances due to two sp...
Tailoring organic emission using dual nanocavities in planarized photonic crystal structure
This study investigates the feasibility of tailoring organic emission profiles using adjacent nanocavities in a planarized photonic crystal, a concept that holds potential for practical photonic devic...
Resonant control of magnetization in a shunted φ0 junction with LC circuit
The possibility of resonant control of magnetization in a Josephson superconductor–ferromagnet–superconductor φ0 junction shunted by an LC circuit is demonstrated. As a result of the resonance of Jose...
A hexagonal phase of BiCuTeO films: Growth, crystal structure, and thermoelectric properties
In this work, a stable metallic phase of BiCuTeO has been identified in c-axis oriented films. Unlike the tetragonal structure observed in BiCuTeO bulks, this film exhibits a unique hexagonal layered...
Time-resolved nanosecond magnetization switching induced by spin-transfer torque for cryogenic memories
Spin-transfer torque magnetic random access memory (STT-MRAM) has emerged as a promising candidate for cryogenic data storage, owing to its nonvolatility, high density, low power consumption, and espe...
Current maps of moiré superlattices with atomic reconstruction
Current maps measured by conductive atomic force microscopy are critical for investigating the atomic reconstruction in moiré superlattices. However, a microscopic analytical theory for calculating th...
Sodium dopant in pectin mediates ionic-electronic coupling on Na0.67Mg0.28Mn0.72O2 for electrolyte-type artificial synapse with tunable plasticity
To enhance the plasticity modulation capabilities of two terminal electrolyte-based artificial synapse, we designed a battery-like device that integrates a P2-type intercalated compound, Na0.67Mg0.28M...
200-period Si/Si0.8Ge0.2 superlattice structure growth and characterization for vertical stacked DRAM
The demand for increased memory density and the limit of DRAM (dynamic random-access memory) device downscaling are driving conventional DRAM to advanced vertical stacked DRAM (VS DRAM). The multi-per...