Through the anomalous Hall effect (AHE), a ferromagnet can generate spin current in direction transverse to an applied charge current, and hence exert torque on another ferromagnet. The authors observe, however, that when in-plane is passed through spin-valve structure, out-of-plane effective magnetic field created, which exerts free layer. This field, originating from broken mirror symmetry of valve, completely dominates dampinglike one expects AHE. Such strong would be useful for switching...

Generation of spin current lies at the heart spintronic research. The Hall effect and Seebeck have drawn considerable attention in last few years to create pure by heavy metals ferromagnets, respectively. In this work, we show direct evidence heat conversion non-magnetic Platinum Nernst (SNE) room temperature. This is thermal analogue non-magnets. We shown that 8 K/μm gradient Pt can lead generation density order 108 A/m2 virtue SNE. opens up an additional possibility couple relativistic...

Electrically controllable nonvolatile magnetic memories show great potential for the replacement of conventional semiconductor-based memory technologies. Here, we experimentally demonstrate ultrafast spin-orbit torque (SOT)–induced coherent magnetization switching dynamics in a ferromagnet. We use an photoconducting switch and coplanar strip line to generate guide ~9-picosecond electrical pulse into heavy metal/ferromagnet multilayer induce SOT. then magneto-optical probing investigate with...

In this paper we present the results of a Compton-profile study on polycrystalline palladium. The measurements have been made by scattering 59.54-keV photons. Theoretical Compton profiles calculated with use renormalized-free-atom (RFA) model and augmented-plane-wave method. Best agreement between measured values was found for 4${d}^{9.7}$5${s}^{0.3}$ configuration within RFA model.

In this work report unconventional sign change of field like spin orbit torque in ultra-thin Chromium(1.5nm-5nm)/Nickel(8nm) bi-layer. We performed standard spin-torque ferromagnetic resonance (ST-FMR) experiment Cr/Ni bi-layer by passing radio frequency current and measuring DC voltage. observe that when thickness Cr layer is critically low (<6nm) on Ni significantly increases. Most importantly the opposite to Oersted generated torque. To verify interracial nature torque, 2 nm thin Cu...

The classification of radio-frequency (RF) signals is crucial for applications in robotics, traffic control, and medical devices. Spintronic devices, which respond to RF via ferromagnetic resonance, offer a promising solution. Recent studies have shown that neural network nanoscale magnetic tunnel junctions can classify without digitization. However, the complexity these poses challenges rapid scaling. In this work, we demonstrate simple spintronic known as metallic spin-diodes, effectively...

We report the thermally driven giant field-like spin-torque in magnetic tunnel junctions (MTJ) on application of heat current from top to bottom. The term is detected by shift magneto-resistance hysteresis loop applying temperature gradient. observed that depends symmetry MTJ. In asymmetric structures, with different ferromagnetic materials for free and fixed layers, greatly enhanced. Our results show a pure spin density order 109 A/m2 can be produced creating 120 mK difference across 0.9 nm...

We offer a perspective on the prospects of ultrafast spintronics and opto-magnetism as pathway to high-performance, energy-efficient, non-volatile embedded memory in digital integrated circuit applications. Conventional spintronic devices, such spin-transfer-torque magnetic-resistive random-access (STT-MRAM) spin–orbit torque MRAM, are promising due their non-volatility, energy-efficiency, high endurance. STT-MRAMs now entering into commercial market; however, they limited write speed...

A gyrator is a non-reciprocal two port device with 180° phase shift in the transmissions between ports. Though electromagnetic realizations of gyrators have been well studied, devices based on other forms interaction are relatively unexplored. Here we demonstrate which signal transmitted via magneto-elastic coupling, can function as gyrator. The built piezoelectric substrate: one this has interdigital transducers (IDTs) and periodic array nickel/gold lines. When magnetizations Ni lines...

Magnetic domain wall (DW)-based logic devices offer numerous opportunities for emerging electronics applications allowing superior performance characteristics such as fast motion, high density, and nonvolatility to process information. However, these rely on an external magnetic field, which limits their implementation; this is particularly problematic in large-scale applications. Multiferroic systems consisting of a piezoelectric substrate coupled with ferromagnets provide potential...

As spintronics continues to replace conventional electronics, devices that produce oscillatory signals are needed in particular. They usually based on spin-transfer torque, but this study offers an alternative, feedback of spin current into a magnetic tunnel junction (MTJ). A combination thermal fluctuations, magnetoresistance, and the Hall effect can induce periodic precessional states MTJ's free layer, significantly reducing critical for oscillations improving their quality factor.

The magnetization of a nano-magnet can be manipulated and even switched by spin-orbit torques. Hence, accurate characterization these torques is essential from the application perspective. In this work, we present an alternative method to characterize torque utilizing planar Hall effect ferromagnet. We show that while ferromagnet excited resonance due torque, its resistance also varies, which leads sensitive detection torque. further demonstrate geometry enables us estimate spin angle...

The phenomenon of injection locking, in which coupled oscillators become synchronized, is exciting from the points view both physics and technology, with relevance to many systems physics, chemistry, biology. This study explores locking a nanoscale spintronic oscillator feedback. Beyond integer fractional this also test bed for...

Low output power and limited spectral purity are two major challenges in developing spin-transfer nano-oscillators (STNOs) for applications spintronics. The authors demonstrate that a combination of delayed magnetic field feedback injection locking can be used to overcome both challenges, significantly improved signal quality. Furthermore, with increasing strength phase is found which oscillations stabilized by the itself, showing network strongly coupled STNOs feasible. By controlling...

More and more attention is turned to using particular physical systems for innovative computational schemes. For example, an array of synchronized oscillators can be used solve unconventional, computationally hard problems. Here the authors demonstrate synchronization spin-transfer-torque nano-oscillators via long-range Oersted magnetic field coupling. This coupling scheme presents advantage engineering asymmetric between any two oscillators, which would mimic different biological neural...

Spin current has emerged as a leading candidate for manipulation of spins in nano-magnet. We here experimentally show another utility spin current, viz., it can be used the generation phonons. Within same experimental setup, we also demonstrate inverse effect by To these effects, measured scattering-matrix two-port device with interdigital transducers one port and an array Ni/Pt lines second made on piezoelectric substrate. The off-diagonal elements which correspond to transmission between...

Relativistic interaction between an electron's spin and orbital angular momentum has provided efficient mechanism to control the magnetization of nanomagnets. Extensive research been done understand improve spin-orbit-interaction-driven torques generated by nonmagnets applying electric current. In this work, we show that heat current in a nonmagnet can also couple its spin-orbit produce torque on adjacent ferromagnet. Hence, work provides platform study spin-orbito-caloritronic effects heavy...

Abstract The results are presented of a Compton profile study on polycrystalline silver. measurements carried out using 59.54 keV γ‐rays three samples different thicknesses − 0.5, 0.25, and 0.125 mm. Theoretical profiles calculated (i) renormalised free atom model for 4d 9 5s 2 10 Fs 1 electron configurations (ii) orthonormalised LCAO approach. Best agreement between the measured values is found configuration within RFA model.

Abstract The Compton profile of polycrystalline niobium is measured using 59.54 keV Γ‐rays from a 241 Am source. results are interpreted in terms renormalised free atom model. Best agreement between the and calculated values found for electronic configuration 4d 4,4 5s 0.6 .

Graphene nanoribbons (GNRs), when synthesized with atomic precision by bottom–up chemical approaches, possess tunable electronic structure, and high theoretical mobility, conductivity, heat dissipation capabilities, which makes them an excellent candidate for channel material in post-silicon transistors. Despite their immense potential, achieving highly transparent contacts efficient charge transport—which requires proper contact selection a deep understanding of the complex one-dimensional...

We investigate localized in-plane strains on the microscale, induced by arrays of biased surface electrodes patterned piezoelectrics. Particular focus is given to influence that adjacent electrode pairs have one another study impact densely packed arrays. present a series X-ray microdiffraction studies reveal spatially resolved micrometer-scale strain distribution. The maps with resolution highlight how local profile in square regions up 250 × μm2 size affected are ferroelectric...

An experiment was conducted to find out the effects of various postharvest treatments on biochemical and bioactive compounds custard apple cv. Balanagar fruits. In present experiment, three chemicals viz. oxalic acid (OA) (2.5 mM, 5.0 7.5 10 mM; salicylic (SA) (0.5 1.0 1.5 2.0 mM) Sodium Nitro Prusside (SNP) at 0.5 mM along with control were applied. Fruits stored ambient condition (Temp. 25 ± 2°C relative humidity (RH) 44 2%). Results indicated that fruits treated SNP (2.0 had significantly...

In this work we have studied the effect of external applied magnetic field on locking range spintronic feedback nano oscillator. Injection oscillator at integer and fractional multiple its auto oscillation frequency was demonstrated recently. Here show that increases with increasing field. We also synchronization (n=1,2,3) multiples side band peaks higher values. verified experimental results macro-spin simulation using similar conditions as used for study.