Publications (28)
Manipulating spin wave polarization in synthetic antiferromagnet
Jin Lan, Weichao Yu, Jiang Xiao
Polarization is a key ingredient of all waves, including the electromagnetic wave, the acoustic wave, as well as the spin wave. Due to the fixed ferromagnetic order, the spin wave…
A micromagnetic model with bidirectional magneto-thermal coupling
Peiru Yi, Zian Xia, Weichao Yu
Most conventional micromagnetic frameworks in spin caloritronics rely on a unidirectional coupling approximation, wherein thermal fluctuations drive magnetization dynamics while th…
A Hopfield neural network in magnetic films with natural learning
Weichao Yu, Jiang Xiao, Gerrit E. W. Bauer
Macroscopic spin ensembles possess brain-like features such as non-linearity, plasticity, stochasticity, selfoscillations, and memory effects, and therefore offer opportunities for…
Controllable highly oriented skyrmion track array in Fe3GaTe2
Yunhao Wang, Shiyu Zhu, Chensong Hua +15
Magnetic skyrmions are emerging as promising candidates for next-generation information technologies, while the realization of scalable skyrmion lattices with tailored configuratio…
Restricted Boltzmann machine as a probabilistic Enigma
Bin Chen, Weichao Yu
We theoretically propose a symmetric encryption scheme based on Restricted Boltzmann Machines that functions as a probabilistic Enigma device, encoding information in the marginal…
Geometric magnonics with chiral magnetic domain walls
Jin Lan, Weichao Yu, Jiang Xiao
Spin wave, the collective excitation of magnetic order, is one of the fundamental angular momentum carriers in magnetic systems. Understanding the spin wave propagation in magnetic…
Topological spin Hall effects and tunable skyrmion Hall effects in uniaxial antiferromagnetic insulators
Matthew W. Daniels, Weichao Yu, Ran Cheng +2
Recent advances in the physics of current-driven antiferromagnetic skyrmions have observed the absence of a Magnus force. We outline the symmetry reasons for this phenomenon, and s…
Circulating cavity magnon polaritons
Weichao Yu, Tao Yu, Gerrit E. W. Bauer
We predict magnon polariton states circulating unidirectionally in a microwave cavity when loaded by a number of magnets on special lines. Realistic finite-element numerical simula…
Physical Neural Networks with Self-Learning Capabilities
Weichao Yu, Hangwen Guo, Jiang Xiao +1
Physical neural networks are artificial neural networks that mimic synapses and neurons using physical systems or materials. These networks harness the distinctive characteristics…
Antiferromagnetic Domain Wall as Spin Wave Polarizer and Retarder
Jin Lan, Weichao Yu, Jiang Xiao
As a collective quasiparticle excitation of the magnetic order in magnetic materials, spin wave, or magnon when quantized, can propagate in both conducting and insulating materials…
A spin wave diode
Jin Lan, Weichao Yu, Ruqian Wu +1
A diode, a device allowing unidirectional signal transmission, is a fundamental element of logic structures and lies in the heart of modern information systems. Spin wave or magnon…
Frequency modulation on magnons in synthetic dimensions
Meng Xu, Yan Chen, Weichao Yu
Magnons are promising candidates for next-generation computing architectures, offering the ability to manipulate their amplitude and phase for information encoding. However, the fr…
Superior probabilistic computing using operationally stable probabilistic-bit constructed by manganite nanowire
Yadi Wang, Bin Chen, Wenping Gao +7
Probabilistic computing has emerged as a viable approach to treat optimization problems. To achieve superior computing performance, the key aspect during computation is massive sam…
Acoustic Frequency Multiplication and Pure Second Harmonic Generation of Phonons by Magnetic Transducers
Chengyuan Cai, Xi-Han Zhou, Weichao Yu +1
We predict frequency multiplication of surface acoustic waves in dielectric substrates via the ferromagnetic resonance of adjacent magnetic transducers when driven by microwaves. W…
Realization of Attractive Level Crossing via a Dissipative Mode
Weichao Yu, Jiongjie Wang, H. Y. Yuan +1
The new field of spin cavitronics focuses on the interaction between the magnon excitation of a magnetic element and the electromagnetic wave in a microwave cavity. In strong inter…
Acoustic Tweezers for Magnetic Skyrmions
Chongzhou Wang, Weichao Yu
Current methods for driving magnetic skyrmions predominantly translate ensembles as a whole, lacking single-particle selectivity. Here, we propose an "acoustic tweezer" that determ…
Dynamic Exchange Coupling between Magnets Mediated by Attenuating Elastic Waves
Weichao Yu
Coupling between spatially separated magnets can be mediated by excitations such as photons and phonons, which can be characterized as coherent coupling and dissipative coupling wi…
A self-learning magnetic Hopfield neural network with intrinsic gradient descent adaption
Chang Niu, Huanyu Zhang, Chuanlong Xu +14
Physical neural networks using physical materials and devices to mimic synapses and neurons offer an energy-efficient way to implement artificial neural networks. Yet, training phy…
Probing disorder-induced time-reversal symmetry breaking in Josephson junctions
Yu Wu, Daiqiang Huang, Huanyu Zhang +13
The relation between superconductivity and time-reversal symmetry (TRS) is one of the most fascinating problems in condensed matter physics. Although most superconductors inherentl…
Magnetization dynamics affected by phonon pumping
Richard Schlitz, Luise Siegl, Takuma Sato +4
"Pumping" of phonons by a dynamic magnetization promises to extend the range and functionality of magnonic devices. We explore the impact of phonon pumping on room-temperature ferr…
Dynamic Magnetoelastic Boundary Conditions and the Pumping of Phonons
Takuma Sato, Weichao Yu, Simon Streib +1
We derive boundary conditions at the interfaces of magnetoelastic heterostructures under ferromagnetic resonance for arbitrary magnetization directions and interface shapes. We app…
Experimental generation of circulating cavity magnon polaritons
Jeremy Bourhill, Weichao Yu, Vincent Vlaminck +3
We experimentally realize circularly polarised unidirectional cavity magnon polaritons in a torus-shaped microwave cavity loaded by a small magnetic sphere. At special positions th…
Antiferromagnetic domain wall motion driven by polarized spin waves
Weichao Yu, Jin Lan, Jiang Xiao
The control of magnetic domain walls is essential for the magnetic-based memory and logic applications. As an elementary excitation of magnetic order, spin wave is capable of movin…
Purely magnetic logic based on polarized spin waves
Weichao Yu, Jin Lan, Jiang Xiao
Spin wave, the precession of magnetic order in magnetic materials, is a collective excitation that carries spin angular momentum. Similar to the acoustic or optical waves, the spin…
Nonabelian magnonics in antiferromagnets
Matthew W. Daniels, Ran Cheng, Weichao Yu +2
We present a semiclassical formalism for antiferromagnetic (AFM) magnonics which promotes the central ingredient of spin wave chirality, encoded in a quantity called magnonic isosp…
Spin-Wave Fiber
Weichao Yu, Jin Lan, Ruqian Wu +1
Spin waves are collective excitations propagating in the magnetic medium with ordered magnetizations. Magnonics, utilizing the spin wave (magnon) as information carrier, is a promi…
A loop theory for the input-output problems in cavities
H. Y. Yuan, Weichao Yu, Jiang Xiao
The input-output formalism is the basis to study the response of an optical cavity to the external stimulations. The existing theories usually handle cavity systems with only one i…
Magnetostatic effect on spin dynamics properties in antiferromagnetic Van der Waals material CrSBr
Hongyue Xu, Nan Jiang, Haoran Chen +11
Van der Waals (vdW) antiferromagnets are exceptional platforms for exploring the spin dynamics of antiferromagnetic materials owing to their weak interlayer exchange coupling. In t…