Xiufeng Han
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View article: Optimal Aggregation of LLM and PRM Signals for Efficient Test-Time Scaling
Optimal Aggregation of LLM and PRM Signals for Efficient Test-Time Scaling Open
Process reward models (PRMs) are a cornerstone of test-time scaling (TTS), designed to verify and select the best responses from large language models (LLMs). However, this promise is challenged by recent benchmarks where simple majority v…
View article: Bayesian Reasoning Enabled by Spin-Orbit Torque Magnetic Tunnel Junctions
Bayesian Reasoning Enabled by Spin-Orbit Torque Magnetic Tunnel Junctions Open
Bayesian networks play an increasingly important role in data mining, inference, and reasoning with the rapid development of artificial intelligence. In this paper, we present proof-of-concept experiments demonstrating the use of spin-orbi…
View article: Controlling spin currents with magnon interference in a canted antiferromagnet
Controlling spin currents with magnon interference in a canted antiferromagnet Open
Controlling spin current lies at the heart of spintronics and its applications. The sign of spin currents is monotonous in ferromagnets once the current direction is determined. Spin currents in antiferromagnets can possess opposite polari…
View article: Coherent harmonic generation of magnons in spin textures
Coherent harmonic generation of magnons in spin textures Open
Harmonic generation, a notable non-linear phenomenon, has promising applications in information processing. For spin-waves in ferromagnetic materials, great progress has been made in the generation higher harmonics, however probing the coh…
View article: Engineering-Oriented Design of Drift-Resilient MTJ Random Number Generator via Hybrid Control Strategies
Engineering-Oriented Design of Drift-Resilient MTJ Random Number Generator via Hybrid Control Strategies Open
Magnetic Tunnel Junctions (MTJs) have shown great promise as hardware sources for true random number generation (TRNG) due to their intrinsic stochastic switching behavior. However, practical deployment remains challenged by drift in switc…
View article: Probabilistic Greedy Algorithm Solver Using Magnetic Tunneling Junctions for Traveling Salesman Problem
Probabilistic Greedy Algorithm Solver Using Magnetic Tunneling Junctions for Traveling Salesman Problem Open
Combinatorial optimization problems are foundational challenges in fields such as artificial intelligence, logistics, and network design. Traditional algorithms, including greedy methods and dynamic programming, often struggle to balance c…
View article: Identification of priority factors for risk control of trace toxic elements in surface resuspended dust of university campuses
Identification of priority factors for risk control of trace toxic elements in surface resuspended dust of university campuses Open
View article: Materials, physics, and devices of magnonics
Materials, physics, and devices of magnonics Open
View article: Determination of priority control factors for risk management of heavy metal(loid)s in park dust in Mianyang City
Determination of priority control factors for risk management of heavy metal(loid)s in park dust in Mianyang City Open
In order to determine the priority control elements and sources of heavy metal(loid)s (HMs) pollution in park dust, this study collected dust samples from 25 parks in the urban area of Mianyang City and measured the contents of 10 HMs. Bas…
View article: Impact of Interfacial Disorder and Band Structure on the Resonant Conductance Oscillation in Quantum-Well-Based Magnetic Tunnel Junctions
Impact of Interfacial Disorder and Band Structure on the Resonant Conductance Oscillation in Quantum-Well-Based Magnetic Tunnel Junctions Open
International audience
View article: One-dimensional Photonic Crystal Structure Enhanced External-Magnetic-Field-Free Spintronic Terahertz High-Field Emitter
One-dimensional Photonic Crystal Structure Enhanced External-Magnetic-Field-Free Spintronic Terahertz High-Field Emitter Open
Intense terahertz (THz) radiation in free space offers multifaceted capabilities for accelerating electron, understanding the mesoscale architecture in (bio)materials, elementary excitation and so on. Recently popularized spintronic THz em…
View article: Publisher's Note: “Magnonics: Materials, physics, and devices” [Appl. Phys. Lett. <b>125</b>, 020501 (2024)]
Publisher's Note: “Magnonics: Materials, physics, and devices” [Appl. Phys. Lett. <b>125</b>, 020501 (2024)] Open
View article: Quantum materials for spintronic applications
Quantum materials for spintronic applications Open
Strong correlation, breaking symmetry, band topology, collective excitation, and quantum confinement represent important features of quantum materials. When quantum materials intersect with spintronics, these key features fundamentally enh…
View article: Emergence of Topological Bimerons in Monolayer CrSBr
Emergence of Topological Bimerons in Monolayer CrSBr Open
The rich and fascinating physics of topological spin textures in van der Waals two-dimensional magnets has motivated recent growing interests, though a comprehensive understanding remains elusive. Here, in atomistic simulations on monolaye…
View article: A Strategy for Enhancing Perpendicular Magnetic Anisotropy in Yttrium Iron Garnet Films (Small 25/2024)
A Strategy for Enhancing Perpendicular Magnetic Anisotropy in Yttrium Iron Garnet Films (Small 25/2024) Open
Perpendicular Magnetic Anisotropy In article number 2308724, Xi Shen, Xiufeng Han, Richeng Yu, and co-workers proposed a strategy for enhancing perpendicular magnetic anisotropy in yttrium iron garnet (YIG) films with only a tiny lattice m…
View article: Predicting the Occurrence of Forest Fire in the Central-South Region of China
Predicting the Occurrence of Forest Fire in the Central-South Region of China Open
Understanding the spatial and temporal patterns of forest fires, along with the key factors influencing their occurrence, and accurately forecasting these events are crucial for effective forest management. In the Central-South region of C…
View article: Emergence of topological bimerons in monolayer CrSBr
Emergence of topological bimerons in monolayer CrSBr Open
The rich and fascinating physics of topological spin textures in van der Waals two-dimensional magnets has motivated recent growing interests, though a comprehensive understanding remains elusive. Here, by atomistic simulations on monolaye…
View article: Direct and Inverse Spin Splitting Effects in Altermagnetic RuO<sub>2</sub>
Direct and Inverse Spin Splitting Effects in Altermagnetic RuO<sub>2</sub> Open
Recently, the altermagnetic materials with spin splitting effect (SSE), have drawn significant attention due to their potential to the flexible control of the spin polarization by the Néel vector. Here, the direct and inverse altermagnetic…
View article: Probability‐Distribution‐Configurable True Random Number Generators Based on Spin‐Orbit Torque Magnetic Tunnel Junctions
Probability‐Distribution‐Configurable True Random Number Generators Based on Spin‐Orbit Torque Magnetic Tunnel Junctions Open
The incorporation of randomness into stochastic computing can provide ample opportunities for applications such as simulated annealing, non‐polynomial hard problem solving, and Bayesian neuron networks. In these cases, a considerable numbe…
View article: Broad-wave-vector spin pumping of flat-band magnons
Broad-wave-vector spin pumping of flat-band magnons Open
We report the experimental observation of large spin -pumping signals in the YIG/Pt system driven by broad -wave -vector spin -wave spin current. 280-nm-wide microwave inductive antennas offer broad -wavevector excitation, which, in combin…
View article: Author Correction: Controlling the helicity of light by electrical magnetization switching
Author Correction: Controlling the helicity of light by electrical magnetization switching Open
View article: Nanometer thick magneto-optical iron garnet films
Nanometer thick magneto-optical iron garnet films Open
Here we demonstrate nanometer thick iron garnet films suitable for the magneto-optical applica-tions. Bismuth-substituted iron garnet films of compositions Bi{_1}Y{_2}Fe{_5}O{_{12}} and Bi{_1}Tm{_2}Fe{_5}O{_{12}} deposited on gadolinium ga…
View article: Controlling the helicity of light by electrical magnetization switching
Controlling the helicity of light by electrical magnetization switching Open
View article: Ultrastrong to nearly deep-strong magnon-magnon coupling with a high degree of freedom in synthetic antiferromagnets
Ultrastrong to nearly deep-strong magnon-magnon coupling with a high degree of freedom in synthetic antiferromagnets Open
Ultrastrong and deep-strong coupling are two coupling regimes rich in intriguing physical phenomena. Recently, hybrid magnonic systems have emerged as promising candidates for exploring these regimes, owing to their unique advantages in qu…
View article: Predicting the Occurrence of Forest Fire in the Central-South Region of China
Predicting the Occurrence of Forest Fire in the Central-South Region of China Open
Grasping the spatial and temporal patterns of forest fires, along with the key factors that drive them and the ability to forecast such events accurately, is essential for the successful management of forests. In China's southern regi…
View article: Simultaneous Terahertz Pulse Generation and Manipulation with Spintronic Coding Surface (Advanced Optical Materials 6/2024)
Simultaneous Terahertz Pulse Generation and Manipulation with Spintronic Coding Surface (Advanced Optical Materials 6/2024) Open
Spintronic Terahertz Emitters Simultaneous integration of THz radiation generation and manipulation is demonstrated in coded W-Co20Fe60B20-Pt spintronic THz emitters. By precisely controlling the spatial phase of radiated THz waves, it is …
View article: Electrical switching of the perpendicular Neel order in a collinear antiferromagnet
Electrical switching of the perpendicular Neel order in a collinear antiferromagnet Open
Electrical manipulation of magnetic order by current-induced spin torques lays the foundation for spintronics. One promising approach is encoding information in the Néel vector of antiferromagnetic (AFM) materials, particularly to collinea…
View article: Controllable conical magnetic structure and spin-orbit-torque switching in symmetry-broken ferrimagnetic films
Controllable conical magnetic structure and spin-orbit-torque switching in symmetry-broken ferrimagnetic films Open
Exploring and controlling chiral spin textures has attracted enormous interest from the perspective of fundamental research and spintronic applications. Here, we report the emergence of spiral spin states, bulk spin-orbit torque (SOT), and…
View article: Spin-torque–driven antiferromagnetic resonance
Spin-torque–driven antiferromagnetic resonance Open
The intrinsic fast dynamics make antiferromagnetic spintronics a promising avenue for faster data processing. Ultrafast antiferromagnetic resonance–generated spin current provides valuable access to antiferromagnetic spin dynamics. However…
View article: Unusual Inverse Spin Hall Effect in Pt/Co/Pt Multilayers on Single Crystalline Yig
Unusual Inverse Spin Hall Effect in Pt/Co/Pt Multilayers on Single Crystalline Yig Open