Au-coated magnetic Fe nanoparticles have been successfully synthesized by partial replacement reaction in a polar aprotic solvent with about 11 nm core of and 2.5 shell Au. In this work, combination TEM (transmission electron microscopy), XRD (X-ray powder diffractometry), EDS (energy disperse X-ray spectroscopy), SQUID (superconducting quantum interference device), TGA (thermograviometric analysis) UV–visible absorption spectroscopy were employed to characterize the morphology, structure,...

JavaScript engines have been shown prone to security vulnerabilities, which can lead serious consequences due their popularity. Fuzzing is an effective testing technique discover vulnerabilities. The main challenge of fuzzing generate syntactically and semantically valid inputs such that deep functionalities be explored. However, the dynamic nature special features different engines, it quite challenging meaningful test inputs.

We report optimization of half-flux-quantum (HFQ) circuits composed SQUIDs containing conventional Josephson junctions and π-shift magnetic junctions. The SQUID can act as a junction with an extremely small critical current be easily switched by weak driving force the assistance circulating that is induced due to quantization conditions. It leads drastic reduction both static dynamic power consumption. However, parameter margins HFQ obtained so far narrow compared single-flux-quantum...

Abstract Half-flux-quantum (HFQ) circuits store and propagate half-flux quanta. The basic circuit element is a 0-π SQUID, which superconducting quantum interference device with conventional Josephson junction (0-junction) π-shifted ferromagnetic (π-junction). A SQUID achieves small critical current in the absence of an external magnetic field, thus reducing power consumption. It easy to set up 0-0-π SQUIDs two 0-junctions π-junction serves as π phase-shifter. We simulated SQUID-based HFQ...

Abstract We have demonstrated transfer coefficients breaking the conventional limit in flux circuits (FTCs) by introducing a π -phase-shifted Josephson junction ( -junction), where FTCs include an input/output inductor. According to current-phase relationship of -junction, -junction behaves as inductor with intrinsically negative kinetic inductance. When single- superconducting quantum interference device -SQUID) which geometric is placed parallel formed, current flowing on inductor, that...

Abstract We have developed half-flux-quantum (HFQ) circuits using all-π-junctions formed from an NbN/AlN/PdNi/NbN (SIFS) structure. The were fabricated a novel process that incorporated ground plane on top of the chip, enabling epitaxial growth NbN-based junctions substrate. π-state was demonstrated through HFQ shift. Notably, these π-junctions exhibited self-overdamped current-voltage characteristics, them to function as switching components without need for shunt resistors. elimination...

Abstract We directly observed π -leaps of superconducting phase differences in -junction-based quantum interference devices (SQUIDs). The SQUIDs studied here are formed by introducing a -junction to conventional-junction (0-junction)-based direct current (DC)-SQUID, which is referred as the 0-0- SQUID. Either clockwise or counter-clockwise-circulating currents flow spontaneously SQUID because -phase shift -junction. In other words, has bistable state corresponding directions circulating...

We adopt superconductor/ferromagnet/insulator/superconductor (SFIS) Josephson junctions (JJs) as both switching JJs and intrinsic π phase shifters in superconductor digital circuits. The critical current density (Jc) characteristic voltage (Vc) of the SFIS are about 22 A/cm2 μV, respectively. shift is confirmed by measuring suppressed nominal Icn half-period-shifted modulation pattern a π–π–π superconducting quantum interference device (SQUID) that contains three π-JJs loop. A...

We studied niobium nitride (NbN)-based π-junctions with a diluted ferromagnetic Pd89Ni11 interlayer (NbN/PdNi/NbN junctions). In the NbN/PdNi/NbN junctions various PdNi thicknesses, we observed non-monotonic dependence of critical currents on thickness, indicating effects exchange interaction superconducting order parameter. From theoretical fitting experimental data, found that showed significantly smaller degree spin-flip scattering in than CuNi NbN/CuNi/NbN reported previously. The weak...

Abstract Half-flux-quantum (HFQ) circuits are based on 0–π superconducting quantum interference devices (SQUIDs) and is one of the energy-efficient superconductor digital circuits. The bit energy determined by critical current I cn SQUID, which can be easily tuned with loop inductance junction current. In this work, an alternative π–π–π SQUID adopted to demonstrate HFQ simplify fabrication process enhance circuit efficiency. properties superconductor/ferromagnet/insulator/superconductor...

Ambipolar transistors from low-dimensional semiconductors with high charge-transporting capability and tunable bandgap have developed rapidly in functional applications, such as neuromorphic computing, lighting, storing, sensing. However, there are still challenges to balance procedure complexity device performance, current on–off ratio, work voltage, operational reliability. Here, we demonstrated solution-processed ambipolar ionic-gated (amIGTs) stacked heterojunctions of 1D/2D SnO2/Se...

We demonstrated interface circuits between a half-flux-quantum (HFQ) circuit and rapid single-flux-quantum (RSFQ) to obtain SFQ/HFQ HFQ/SFQ converters. These converters were created by simply inserting resistor an RSFQ the adjacent HFQ circuit, where both are based on pulse logic. enable us create combinatory that make best use of features two circuits. Using DC/SFQ, SFQ/HFQ, HFQ/SFQ, SFQ/DC converter, we measure Josephson transmission line (JTL) composed eight 0-0-π superconducting quantum...

This study shows that we can obtain an enhanced mutual coupling by using a superconducting quantum interference device (SQUID) containing π-phase shift Josephson junction (π-junction). The π-junction increase the current flowing in loop inductance of SQUID, thereby enhancing magnetic flux generated inductance. Therefore, effective self-inductance SQUID increase, resulting coupling. We use 0-π formed conventional (0-junction) and π-junction. Our numerical analysis for simplified structure...

We fabricated and characterized a weakly coupled magnetic Josephson junction based on epitaxial NbN/Ni60Cu40/NbN trilayer heterostructures single crystal MgO (100) substrates. X-ray diffraction cross-sectional scanning transmission electron microscopy were used to verify the growth of trilayer, while ferromagnetic properties NiCu NbN film recorded by plotting magnetization as function both temperature field strength. The junctions demonstrated typical effect with nonlinear overdamped...

We fabricate high quality superconductor/ferromagnet/superconductor (SFS) Josephson junctions using epitaxial NbN/Ni60Cu40/NbN trilayer heterostructures. Both experimental measurements and theoretical calculations of the ferromagnet layer thickness dependence critical current are performed. observe damped oscillation behavior as a function ferromagnetic at 4.2 K, which shows 0–π phase transition in this type magnetic junction. Clear reverse π–0 transitions occur around Ni60Cu40 thicknesses...

Leveraging the quantization properties inherent in superconductors, we present development of an intrinsic superconducting phase battery. This advancement is achieved by integrating a ferromagnetic π-phase Josephson junction (π-JJ) within ring. The core innovation lies harnessing potential energy π-JJ to generate circulating current, thereby inducing difference as current goes through geometric inductance. mechanism allows for tuning bias φ (0 < π) arrangement inductance We integrate...

Superconducting quantum interference filters (SQIFs) are arrays of superconducting devices with various loop areas. In contrast to the SQIFs conventional Josephson junctions, we propose a way for creating highly integrated using 50 × nm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> three-dimensional (3-D) nanobridge junctions. Here, report fabrication composed hundred 3-D Current-voltage curves single, 10, and 100 junctions in series...

In this paper, dynamical systems theory is applied to investigate the smooth property of traveling wave solutions for a modified Kadomtsev-Petviashvili equation.The results our study demonstrate that an abundant waves arise when their corresponding orbits have intersection points with singular straight line.In some conditions, exact parametric representations these in explicit or implicit forms are obtained.

Due to resource constraints and unreliable communication, wireless sensor network (WSN) programming debugging remain be a challenging task. Runtime errors must constantly monitored, often by checking for violations of certain invariants. Once an error is detected, diagnosis performed identify the origin error. Deterministic replay method which has long been proposed distributed systems. However, one significant hurdles applying deterministic on WSN posed small program memory typical nodes....

Due to resource constraints and unreliable communication, wireless sensor network (WSN) programming debugging remain be a challenging task. Runtime errors must constantly monitored, often by checking for violations of certain invariants. Once an error is detected, diagnosis performed identify the origin error. Deterministic replay method which has long been proposed distributed systems. However, one significant hurdles applying deterministic on WSN posed small program memory typical nodes....

Content sharing is an approach to relieve the congestion of cellular networks with alternative communication technologies such as Wi-Fi and bluetooth. Through a Delivery Network (CDN), only small portion users need download data directly. Other obtain packets from these through short-range communications. However, uncertainty movement mobile challenges effectiveness CDNs. Unlike previous CDN solutions, in this paper, we present novel scheme that studies probabilistic meeting users. When...