A5080838774- Magnetic properties of thin films
- Topological Materials and Phenomena
- Catalysis and Hydrodesulfurization Studies
- Quantum and electron transport phenomena
- Catalytic Processes in Materials Science
- Advanced Memory and Neural Computing
- Physics of Superconductivity and Magnetism
- Electrocatalysts for Energy Conversion
- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Nanomaterials for catalytic reactions
- Ferroelectric and Negative Capacitance Devices
- Catalysts for Methane Reforming
- Layered Double Hydroxides Synthesis and Applications
- Catalysis for Biomass Conversion
- Adsorption and biosorption for pollutant removal
- Multiferroics and related materials
- Quantum optics and atomic interactions
- High-Temperature Coating Behaviors
- Thermal Expansion and Ionic Conductivity
- Analog and Mixed-Signal Circuit Design
- Ammonia Synthesis and Nitrogen Reduction
- Subcritical and Supercritical Water Processes
- High Entropy Alloys Studies
- Magnetic Field Sensors Techniques
University of California, Los Angeles
2020-2025
Pennsylvania State University
2018-2025
National University of Defense Technology
2023-2024
Tianjin University of Technology
2024
Qingdao University of Technology
2023
Qingdao University of Science and Technology
2023
Sichuan University
2021
Institute of Physics
2021
Chinese Academy of Sciences
2021
Southwest University of Science and Technology
2018
Giant spin-orbit torque (SOT) from topological insulators (TIs) provides an energy efficient writing method for magnetic memory, which, however, is still premature practical applications due to the challenge of integration with tunnel junctions (MTJs). Here, we demonstrate a functional TI-MTJ device that could become core element future energy-efficient spintronic devices, such as SOT-based random-access memory (SOT-MRAM). The state-of-the-art tunneling magnetoresistance (TMR) ratio 102% and...
Symmetry breaking is a characteristic to determine which branch of bifurcation system follows upon crossing critical point. Specifically, in spin–orbit torque (SOT) devices, fundamental question arises: how can the symmetry perpendicular magnetic moment be broken by in-plane spin polarization? Here, we show that chiral antisymmetric Dzyaloshinskii–Moriya interaction (DMI) induce deterministic SOT switching magnetization. By introducing gradient saturation magnetization or anisotropy, dynamic...
The Dzyaloshinskii-Moriya interaction (DMI) is an antisymmetric exchange that stabilizes spin chirality. One scientific and technological challenge understanding controlling the between chirality electric field. In this study, we investigate unconventional field effect on interfacial DMI, skyrmion helicity, dynamics in a system with broken inversion symmetry. We design heterostructures 3d-5d atomic orbital interface to demonstrate gate bias control of DMI energy thus transform opposite...
In transport, the topological Hall effect (THE) presents itself as nonmonotonic features (or humps and dips) in signal is widely interpreted a sign of chiral spin textures, like magnetic skyrmions. However, when anomalous (AHE) also present, coexistence two AHEs could give rise to similar artifacts, making it difficult distinguish between genuine THE with AHE two-component AHE. Here, we confirm by means transport magneto-optical Kerr (MOKE) microscopy, which skyrmions are directly observed,...
A quantum anomalous Hall (QAH) insulator breaks reciprocity by combining magnetic polarization and spin-orbit coupling to generate a unidirectional transmission of signals in the absence an external field. Such behavior makes QAH materials good platform for innovation circulator technologies. However, it remains elusive as how wavelength chiral edge plasmon relates its frequency wave packet is excited time domain insulator. Here, we investigate magnetoplasmon (EMP) resonances...
Topological insulators (TI) and magnetic topological (MTI) can apply highly efficient spin-orbit torque (SOT) manipulate the magnetization with their unique surface states (TSS) ultrahigh efficiency. Here, SOT switching of a hard MTI, V-doped (Bi,Sb)
The Pd–Zn γ-brass phase provides exciting opportunities for synthesizing site-isolated catalysts with precisely controlled Pd active site ensembles. Introducing a third metallic element into the lattice further perturbs catalytic Here, we introduce coinage elements M (M = Cu, Ag, and Au) investigate occupation factors of each in lattice. CALculation PHAse Diagrams (CALPHAD) modeling approach supported by energetics predicted density functional theory X-ray neutron diffraction Rietveld...
Abstract Stacking superconductors (SC) with ferromagnetic materials (FM) significantly impact superconductivity, enabling the emergence of spin‐triplet states and topological superconductivity. The tuning superconductivity in SC‐FM heterostructure is also reflected recently discovered superconducting diode effect, characterized by nonreciprocal electric transport when time inversion symmetries are broken. Notably, systems, a reversal operation reverses both current magnetization, leading to...
We demonstrate that atomically thin Pt shells deposited on transition metal carbide or nitride cores induce up to a 4-fold enhancement in C2H4 selectivity during the partial hydrogenation of acetylene compared with commercial carbon-supported (Ptcomm) nanoparticles. While typically catalyzes complete alkynes alkanes, catalyst comprising nominal one monolayer (ML) shell titanium tungsten (Pt/TiWN) is capable net generation under industrial front-end reaction conditions featuring large excess...
Terahertz (THz) spin dynamics and vanishing stray field make antiferromagnetic (AFM) materials the most promising candidate for next-generation magnetic memory technology with revolutionary storage density writing speed. However, owing to extremely large exchange energy barriers, energy-efficient manipulation has been a fundamental challenge in AFM systems. Here, we report an electrical of orders through record-low current on order 106 A cm-2 facilitated by unique AFM-ferromagnetic (FM)...
Topological insulator (TI) based heterostructure is a prospective candidate for ultrahigh spin-to-charge conversion efficiency due to its unique surface states. We investigate the in (Bi,Sb)2Te3 (BST)/CoFeB, BST/Ru/CoFeB, and BST/Ti/CoFeB by spin pumping measurement. find that inverse Edelstein effect length (λIEE) increases 60% with Ru insertion while remains constant Ti insertion. This can be potentially explained protection of BST states high electronegativity Ru. Such enhancement...
Cyclohexene is a chemical intermediate produced through catalytic partial hydrogenation of benzene. Density functional theory calculations and microkinetic modeling (MKM) are used to illustrate that the binding energy benzene predictor catalyst's cyclohexene selectivity. Brønsted–Evans–Polanyi (BEP) scaling correlations developed correlate elementary reaction energetics on 3-fold active metal ensemble sites. Based thermochemical linear relationships BEP correlations, only energies H2...
The Weyl antiferromagnet Mn3Sn has recently attracted significant attention as it is not only a novel magnetic quantum material of fundamental interest, but also opens opportunities to investigate number exotic spin-dependent transports for practical antiferromagnetic devices. Here, we report the large spin charge conversion observed in YIG/Mn3Sn. Evidenced by both Seebeck and pumping measurements, efficiency found ∼2.5 times that conventional heavy metal Ta. Our results suggest promising...