Yifei Yang

ORCID: 0000-0001-9904-3876
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About
Contact & Profiles
Research Areas
  • Pulsars and Gravitational Waves Research
  • Graphene research and applications
  • Magnetic properties of thin films
  • Gamma-ray bursts and supernovae
  • Magnetic Properties of Alloys
  • Magnetic and transport properties of perovskites and related materials
  • Astrophysical Phenomena and Observations
  • Geomagnetism and Paleomagnetism Studies
  • Surface and Thin Film Phenomena
  • Quantum and electron transport phenomena
  • High-pressure geophysics and materials
  • Cosmology and Gravitation Theories
  • Characterization and Applications of Magnetic Nanoparticles
  • Solar-Powered Water Purification Methods
  • Astrophysics and Cosmic Phenomena
  • Surface Modification and Superhydrophobicity
  • Diatoms and Algae Research
  • Molecular Junctions and Nanostructures
  • Graphene and Nanomaterials Applications
  • Geophysics and Sensor Technology
  • Chemical and Physical Properties of Materials
  • Radio Astronomy Observations and Technology
  • Rare-earth and actinide compounds
  • ZnO doping and properties
  • Physics of Superconductivity and Magnetism

University of Minnesota
2022-2025

Suzhou Vocational University
2021

University of Science and Technology of China
2021

University of Florida
2019-2020

Colorado State University
2019

Global Unichip (Taiwan)
2010

Spin-orbit torque (SOT) has been extensively studied as a key mechanism in spintronics applications. However, conventional SOT materials limit the spin polarization direction to in-plane orientation, which is suboptimal for efficient magnetization switching. Recently, spins currents with along multiple directions have observed low-symmetry materials, offering promising energy-efficient strategy field-free switching of magnetic perpendicular anisotropy. efficiency this highly dependent on...

10.48550/arxiv.2501.14200 preprint EN arXiv (Cornell University) 2025-01-23

Crystal symmetry plays an important role in the Hall effects. Unconventional spin effect (USHE), characterized by Dresselhaus and out-of-plane spins, has been observed materials with low crystal symmetry. Recently, antisymmetric planar (APHE) was discovered rutile RuO2 IrO2 (101) thin films, which also exhibit In this study, we report observation of both USHE APHE (111) using spin-torque ferromagnetic resonance harmonic measurements, respectively. Notably, unconventional efficiency from more...

10.1063/5.0240538 article EN Applied Physics Letters 2025-03-01

Understanding the mechanisms of unidirectional magnetoresistance (UMR) has become an important topic for its potential application a two-terminal spin–orbit torque device. Field sweep DC measurements have been proposed and adopted to measure value UMR instead second harmonic measurements. In this paper, measurement errors in conventional are investigated. Oersted field field-like usually do not influence measurement, but large was found lead anisotropic difference when sample is perfectly...

10.1063/5.0127587 article EN publisher-specific-oa Journal of Applied Physics 2022-12-02

Abstract Topological semimetal materials have attracted a great deal of attention due to their intrinsic strong spin-orbit coupling, which leads large charge-to-spin conversion efficiency and novel spin transport behaviors. In this work, we observed bilinear magnetoelectric resistance (BMER) up 0.0034 nm 2 A −1 Oe in single layer sputtered Pt 3 Sn at room temperature. Being different from previous works, the value BMER does not change out-of-plane polycrystalline nature layer. The...

10.1038/s44306-024-00036-1 article EN cc-by npj Spintronics 2024-07-17

Spin-orbit torque (SOT) can be used to efficiently manipulate the magnetic state of materials, which is an essential element for memory and logic applications. Due symmetry constraints, only in-plane spins injected into ferromagnet from underlying SOT layer conventional materials such as heavy metals topological materials. Through use with low symmetries, or other breaking approaches, unconventional spin currents out-of-plane polarization has been demonstrated enabled field-free...

10.48550/arxiv.2411.05682 preprint EN arXiv (Cornell University) 2024-11-08

Crystal symmetry plays an important role in the Hall effects. Unconventional spin effect (USHE), characterized by Dresselhaus and out-of-plane spins, has been observed materials with low crystal symmetry. Recently, antisymmetric planar (APHE) was discovered rutile RuO$_2$ IrO$_2$ (101) thin films, which also exhibit However, correlation between USHE APHE remains largely unexplored. In this study, we report observation of both (111) using spin-torque ferromagnetic resonance (ST-FMR) harmonic...

10.48550/arxiv.2411.05688 preprint EN arXiv (Cornell University) 2024-11-08

The narrowest zigzag graphene nanoribbons (nZGNRs) consisting of linearly fused benzene rings have distinctly superior electronic and spintronic properties; yet, to date, fabrication nZGNRs via bottom-up self-assembly remains a daunting challenge. Here, based on first-principles calculations, we propose kinetic pathway for growing Cu(111) using 1,4-dibromo-2,5-bis(bromomethyl)benzene precursors. We show that such precursor molecule can readily adsorb Cu(111), accompanied by easy detachment...

10.1021/acs.jpcc.1c05660 article EN The Journal of Physical Chemistry C 2021-09-30

Horizontal shifts in the top layer of highly oriented pyrolytic graphite, induced by a scanning tunneling microscope (STM) tip, are presented. Excellent agreement is found between STM images and those simulated using density functional theory. First-principle calculations identify that low-energy barrier direction displacement toward structure where none carbon pz orbitals overlap, while high-energy AA stacking. Each directional shift yields real-space surface charge similar to graphene;...

10.48550/arxiv.1502.01239 preprint EN other-oa arXiv (Cornell University) 2015-01-01

We study the 2018 outburst of Aql X-1 via monitor all sky X-ray image (MAXI) data. show that starting in February is a member short-low class frame duration and peak count rate although morphology slightly different from other fast-rise-exponential-decay (FRED) type outbursts with milder rising stage. partial accretion weak propeller stage MAXI data outburst. report on spectral analysis 3 observations Aquila obtained by Insight - hard modulation telescope (Insight-HXMT) during late decay...

10.48550/arxiv.1912.08542 preprint EN other-oa arXiv (Cornell University) 2019-01-01
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