A5013110397- Magnetic properties of thin films
- Advanced Memory and Neural Computing
- Ferroelectric and Negative Capacitance Devices
- Magneto-Optical Properties and Applications
- Magnetic and transport properties of perovskites and related materials
- Mechanical and Optical Resonators
- Neural Networks and Reservoir Computing
- Structural Integrity and Reliability Analysis
- Chemical and Physical Properties of Materials
- Advanced Condensed Matter Physics
- Quantum Information and Cryptography
- Mechanical stress and fatigue analysis
- Physics of Superconductivity and Magnetism
- Magnetic Properties and Applications
- Neural Networks and Applications
- Quantum and electron transport phenomena
- Magnetic Properties and Synthesis of Ferrites
- Topological Materials and Phenomena
- Advanced Fiber Laser Technologies
- Engineering Structural Analysis Methods
- Diamond and Carbon-based Materials Research
University of Hong Kong
2021-2025
Hong Kong University of Science and Technology
2021-2025
Nanjing University of Science and Technology
2021
Nanjing University of Science and Technology ZiJin College
2021
Ferrimagnetic insulators promise low-power and high-speed spintronic applications, thanks to their insulating nature fast dynamics near compensation points. In a ferrimagnetic insulator/heavy metal heterostructure, we investigate field- current-induced magnetization switching at various temperatures observe distinct behaviors owing spin–orbit torque (SOT) heating effect. We have realized SOT across the temperature discovered that is strongly heat-assisted: always above while happens in our...
Topological materials have shown promising potential in the spintronics application due to their conspicuous efficiency of charge-to-spin conversion. Our research investigates temperature-dependent spin–orbit torque (SOT) from sputtered WTex. We reveal a strong temperature dependence SOT and realize current-induced switching WTex with perpendicular magnetic anisotropy structure under wide range 12 K room temperature. findings may pave way for semimetals cryogenic
In the pursuit of advancing neuromorphic computing, our research presents a novel method for generating and precisely controlling intermediate states within heavy metal/ferromagnet systems. These are engineered through interplay strong in-plane magnetic field an applied charge current. We provide fine-tuning these by introducing small out-of-plane field, allowing modulation system’s probabilistic response to varying current levels. also demonstrate implementation spiking neural network (SNN)...
Frequency conversion is a widely realized physical process in nonlinear systems of optics and electronics. As an emerging platform, spintronic devices have the potential to achieve stronger frequency conversion. Here, we demonstrated microwave method hybrid quantum system, integrating nitrogen-vacancy centers diamond with magnetic thin film CoFeB. We bandwidth ranging from 0.1 12GHz, presenting up $\mathrm{25^{th}}$ order further display application this for detection qubits coherent...
The damping parameter ${\alpha}_{\text{FM}}$ in ferrimagnets defined according to the conventional practice for ferromagnets is known be strongly temperature dependent and diverge at angular momentum compensation temperature, where net vanishes. However, recent theoretical experimental developments on ferrimagnetic metals suggest that can such a way, which we denote by ${\alpha}_{\text{FiM}}$, it free of diverging anomaly point little temperature. To further understand dependence...
Hardware-accelerated artificial intelligence with emerging nonvolatile memory such as spin-transfer torque-magneto-resistive random-access (STT-MRAM) is pushing both the algorithm and hardware to their design limits. The restrictions for analog-based in-memory computing (IMC) include device variation, IR drop effect due low resistance of STT-MRAM read disturbance in array at advanced technology node. On-chip hybrid training can recover inference accuracy but cost many epochs, reducing...
Frequency multiplication is a nonlinear process that generates high harmonics from base frequency, which has many applications in RF devices and emerging quantum systems. Spin wave frequency multiplier based on non-crystalline magnetic materials presents compelling alternative to existing ones semiconductor diodes MEMS resonators. It operates the GHz range easily integrated with any substrates but usually needs an undesired bias field. In this work, we demonstrate spin up 5 <sup...
Energy-efficient hardware implementation of machine learning algorithms for quantum computation requires nonvolatile and electrically-programmable devices, memristors, working at cryogenic temperatures that enable in-memory computing. Magnetic topological insulators are promising candidates due to their tunable magnetic order by electrical currents with high energy efficiency. Here, we utilize as memristors (termed memristors) introduce a chiral edge state-based computing scheme. On the one...
Abstract Piping is an important material for fluid transportation in modern industry, and well-structured piping can reduce losses due to maintenance replacement downtime. Therefore it necessary design analyze the pipes order optimize their structure. This paper focuses on composite laminated pipes. In this case, structural analysis of pipe will be carried out by applying laminate theory, model established using Mathcad software. The stress strain each calculated entering winding angle...
In this work, we, for the first time, demonstrate a comprehensive model of multi-level Spin-Orbit torque (SOT)-MRAM. Scalability, stochasticity, and variations SOT-MRAM are captured within unified framework based on modified Preisach hysteresis. The functionalities verified by experimental data from four types SOT devices fabricated us others, including major switching loop, minor loops, device-size dependence, variation intermediate states.
Magnetic insulators such as yttrium iron garnets (YIGs) are of paramount importance for spin-wave or magnonic devices their ultralow damping enables power dissipation that is free Joule heating, exotic magnon quantum state, and coherent coupling to other wave excitations. insulator heterostructures bestow superior structural magnetic properties house immense design space thanks the strong engineerable exchange interaction between individual layers. To fully unleash potential, realizing low...