A5004965817- Magnetic properties of thin films
- Advanced Memory and Neural Computing
- Multiferroics and related materials
- Neural Networks and Reservoir Computing
- Topological Materials and Phenomena
- ZnO doping and properties
- Advanced Condensed Matter Physics
- Graphene research and applications
- Magnetic and transport properties of perovskites and related materials
- Physics of Superconductivity and Magnetism
- Magnetic Properties and Applications
- Magneto-Optical Properties and Applications
- Advanced DC-DC Converters
- Power Systems and Renewable Energy
- Magnetic Properties of Alloys
- High-Voltage Power Transmission Systems
- Ferroelectric and Negative Capacitance Devices
Tsinghua University
2023-2024
Colorado State University
2019-2022
Huazhong University of Science and Technology
2019-2022
${\mathrm{Y}}_{3}{\mathrm{Fe}}_{5}{\mathrm{O}}_{12}$ ($\mathrm{YIG}$) thin films having a thickness of several nanometers and showing both strong perpendicular magnetic anisotropy (PMA) low damping are reported. The deposited by magnetron sputtering at room temperature first then annealed in ${\mathrm{O}}_{2}$ high temperature. substrates ${\mathrm{Gd}}_{3}({\mathrm{Sc}}_{2}{\mathrm{Ga}}_{3}){\mathrm{O}}_{12}$, which share the same crystalline structure as $\mathrm{YIG}$, but have lattice...
Abstract Recent experiments show that topological surface states (TSS) in insulators (TI) can be exploited to manipulate magnetic ordering ferromagnets. In principle, TSS should also exist for other materials, but it remains unexplored as whether such utilized Herein, current‐induced magnetization switching enabled by a non‐TI material, namely, Dirac semimetal α‐Sn, is reported. The use an α‐Sn/Ag/CoFeB trilayer structure. the CoFeB layer switched charge current at room temperature, without...
Droop control and inertia are the typical modes for energy storage system (ESS) suppressing power oscillations. However, when effect is enhanced to some certain extent, ESS will limit output device maximum (termed modulation mode) be out of expected because limited converter capacity. This paper focuses on evaluation index oscillation suppression compares ability rate change rotor speed with different modes. The study shows that oscillations can better suppressed than droop by providing fast...
Abstract This article reports damping enhancement in a ferromagnetic NiFe thin film due to an adjacent α‐Sn film. Ferromagnetic resonance studies show that separated from by ultrathin Ag spacer can cause extra the is three times bigger than intrinsic of Such absent structures where interfaces directly with film, or replaced β‐Sn The data suggest associated topologically nontrivial surface states topological Dirac semimetal phase work suggests that, like insulators, may have promising...
We present room-temperature measurements of magnon spin diffusion in epitaxial ferrimagnetic insulator MgAl$_{0.5}$Fe$_{1.5}$O$_{4}$ (MAFO) thin films near zero applied magnetic field where the sample forms a multi-domain state. Due to weak uniaxial anisotropy, domains are separated primarily by 180$^\circ$ domain walls. find, surprisingly, that presence walls has very little effect on -- nonlocal transport signals state retain at least 95% maximum signal strength measured for...
Abstract Magnons, bosonic quasiparticles carrying angular momentum, can flow through insulators for information transmission with minimal power dissipation. However, it remains challenging to develop a magnon-based logic due the lack of efficient electrical manipulation magnon transport. Here we show electric excitation and control multiferroic modes in spin-source/multiferroic/ferromagnet structure. We demonstrate that ferroelectric polarization electrically modulate magnon-mediated...
The spin-momentum locking of surface states in topological materials can produce a resistance that scales linearly with magnetic and electric fields. Such bilinear magnetoelectric (BMER) effect offers new approach for information reading field sensing applications, but the effects demonstrated so far are too weak or low temperatures. This article reports first observation BMER Dirac semimetals; responses were measured at room temperature substantially stronger than those reported previously....
Previous experiments have shown that perpendicular magnetic anisotropy (PMA) in trilayers consisting of a CoFeB layer, an MgO and nonmagnetic metal (NM) layer depends strongly on whether the was grown top NM or capped by layer. In this letter, we study physical origin phenomenon through first-principles calculations. We took MgO/CoFe/Ta Ta/CoFe/MgO as model structures analyzed energy (MAE) therein. The "substrate/Ta/CoFe/MgO" structure had notably higher MAE than "substrate/MgO/CoFe/Ta"...
To address the combination of computing-in-memory (CIM) architecture and magnetoresistive random-access memory (MRAM), a spin-transfer torque MRAM based resistance-sum-column has been proposed to alleviate low resistance problem that exists in 2-terminal for CIM. In this paper, we propose resistance-sum-row with hybrid reference on high performance 3-terminal voltage-controlled spin-orbit (VC-SOT-MRAM). This new allows one-step parallel XNOR operation, thus enabling ultra-high integration...
Abstract In-memory computing, utilizing non-volatile memories capable of performing both information storage and logic operations within the same device, holds promise for empowering artificial intelligence (AI) with significantly reduced energy consumption. Existing logic-in-memory devices that have been implemented operate mainly based on charge transport, a process inevitably gives rise to heat dissipation. On other hand, magnons, bosonic quasiparticles carrying angular momentum, can flow...
Spin-orbit torques (SOTs) provide an energy-efficient approach for the electrical manipulation of magnetization, pivotal next-generation information storage and processing devices. SOTs can be generated via various mechanisms, such as spin Hall effect, Rashba-Edelstein orbital magnons, swapping. SOTs-based devices hold potential advantages over spin-transfer torque (STT) devices, including low power consumption, enhanced durability, a broader selection applicable materials both SOT...
Magnons, bosonic quasiparticles carrying angular momentum, can flow through insulators for information transmission with minimal power dissipation. However, it remains challenging to develop a magnon-based logic due the lack of efficient electrical manipulation magnon transport. Here we present logic-in-memory device in spin-source/multiferroic/ferromagnet structure, where multiferroic modes be electrically excited and controlled. In this device, is encoded ferromagnetic bits by...