A5077206830- Magnetic properties of thin films
- Physics of Superconductivity and Magnetism
- Iron-based superconductors research
- Topological Materials and Phenomena
- Quantum and electron transport phenomena
- Magnetic and transport properties of perovskites and related materials
- Heusler alloys: electronic and magnetic properties
- 2D Materials and Applications
- Rare-earth and actinide compounds
- MXene and MAX Phase Materials
- Electronic and Structural Properties of Oxides
- Advanced Condensed Matter Physics
- Magnetic Field Sensors Techniques
- Graphene research and applications
- Quantum Information and Cryptography
- Geochemistry and Geologic Mapping
- Quantum Computing Algorithms and Architecture
- Metallic Glasses and Amorphous Alloys
- Crystallography and Radiation Phenomena
- Heavy metals in environment
- Surface and Thin Film Phenomena
- Magnetic Properties and Applications
- Coal and Its By-products
- Phosphodiesterase function and regulation
- Magneto-Optical Properties and Applications
Southern University of Science and Technology
2018-2025
Beijing Academy of Quantum Information Sciences
2023-2025
Quantum (Australia)
2024
China University of Geosciences (Beijing)
2020
Arizona State University
1999-2018
University of Nebraska–Lincoln
2016
South Dakota State University
2016
Indian Institute of Technology Mandi
2016
Johns Hopkins University
1994-2008
Johns Hopkins Medicine
1994
Platinum (Pt) metal, being nonmagnetic and with a strong spin-orbit coupling interaction, has been central in detecting the pure spin current establishing most of recent spin-based phenomena. Magnetotransport measurements, both electrical thermal, conclusively show ferromagnetic characteristics thin Pt films on insulator due to magnetic proximity effects. The phenomena measured by Pt, including inverse Hall Seebeck effects, are thus contaminated not exclusively established.
We report on structural, magnetic, transport, and spin-polarization measurements of the Heusler alloys ${\mathrm{Co}}_{2}\mathrm{MnSi}$ NiMnSb. Laue diffraction patterns confirm single-crystal nature ${\mathrm{Co}}_{2}\mathrm{MnSi}.$ Room-temperature transport show a negative magnetoresistance in Point-contact Andreev reflection spin polarization yield values for NiMnSb 56% 45%, respectively. Temperature dependence resistivity reveals relatively large residual ratio...
Topological surface states reveal proximity-induced ferromagnetism with perpendicular anisotropy persisting above 400 K.
Here, we propose that Floquet engineering offers a strategy to realize the nonequilibrium quantum anomalous Hall effect (QAHE) with tunable Chern number. Using first-principles calculations and theorem, unveil QAHE related valley polarization (VP-QAHE) is formed from hybridization of sidebands in two-dimensional family MSi2Z4 (M = Mo, W, V; Z N, P, As) by irradiating circularly polarized light (CPL). Through tuning frequency, intensity, handedness CPL, number VP-QAHE highly up C ±4, which...
The cGMP-gated cation channel mediating visual transduction in retinal rods was recently found to comprise at least two subunits, 1 and 2 (or alpha beta). SDS gels of the purified show, addition a 63-kDa protein band (subunit 1), 240-kDa that binds Ca(2+)-calmodulin, modulator channel. To examine any connection between subunit protein, channels formed from expressed cloned subunits human embryonic kidney (HEK) 293 cells were tested for Ca(2+)-calmodulin effect. Homooligomeric by alone showed...
Abstract The recently discovered kagome superconductors offer a promising platform for investigating intertwined orders and novel states, including topology, superconductivity, charge density waves, more. interplay among these can spontaneously break rotational symmetry, giving rise to exotic phenomena such as nematicity or even nematic superconductivity. Here we present our findings on the two-fold symmetric superconductivity in thin-flake RbV 3 Sb 5 response direction-dependent in-plane...
We studied the superconducting diode effect in type-II Weyl semimetal T d -MoTe 2 that is covered with Al nanoparticles.
Superconducting qubits are a promising platform for building fault-tolerant quantum computers, with recent achievement showing the suppression of logical error increasing code size. However, leakage into noncomputational states, common issue in practical systems including superconducting circuits, introduces correlated errors that undermine correction (QEC) scalability. Here, we propose and demonstrate reduction scheme utilizing tunable couplers, widely adopted ingredient large-scale...
Superconductivity (SC) is one of the most intriguing physical phenomena in nature. Nucleation SC has long been considered highly unfavorable if not impossible near ferromagnetism, low dimensionality and, above all, out non-superconductor. Here we report observation with TC 4K Ni/Bi bilayers that defies all known paradigms superconductivity, where neither ferromagnetic Ni film nor rhombohedra Bi superconducting isolation. This unusual independent growth order (Ni/Bi or Bi/Ni), but sensitive...
The transition metal (TM) chalcogenides of the form TMX2 (X = S or Se) have been studied for decades due to their interesting electronic and magnetic properties such as metamagnetism metal–insulator transitions. In particular, Co1−xFexS2 alloys were subject investigation in 1970s general interest itinerant ferromagnetism. recent years (2000–present) it has shown, both by structure calculations detailed experimental investigations, that is a model system highly spin polarized radically...
The structural, magnetic, and electron-transport properties of Heusler-ordered CoFeCrAl thin films are investigated experimentally theoretically. films, sputtered onto MgO having thicknesses about 100 nm, exhibit virtually perfect single-crystalline epitaxy a high degree L21 chemical order. X-ray diffraction transmission-electron microscopy show that the structure is essentially Heusler type. ferrimagnetic, with Curie temperature 390 K, net moment 2 μB per formula unit. room resistivity 175...
Fe4N thin films with (001) texture were prepared by reactive sputtering on MgO substrates, utilizing either a Cr or Ag buffer layer to facilitate the epitaxial growth. X-ray diffraction, atomic force microscopy, and vibrating sample magnetometry measurements show that film grown is superior layer. The point contact Andreev reflection measurement was then conducted, spin polarizations determined be 61.1% 81.3% for layers, respectively. polarization significantly higher than ratio reported...
Emergent physical properties often arise at interfaces of complex oxide heterostructures due to the interplay between various degrees freedom, especially those with polar discontinuities. It is desirable explore if these structures may generate pure and controllable spin currents, which are needed attain unmatched performance energy efficiency in next-generation spintronic devices. Here we report emergence a spin-polarized two-dimensional electron gas (SP-2DEG) interface two insulators,...
Spatial pattern analysis plays an important role in geography for understanding geographical phenomena, identifying causes, and predicting future trends. Traditional tools assess cluster or dispersed patterns of features based on the distribution nonspatial attributes. These metrics ignore shape spatial objects—a critical consideration. The study analysis, other hand, measures compactness, elongation, convexity areal feature merely geometry, without considering its attribute distribution....
Andreev reflection spectroscopy with unpolarized and highly spin-polarized currents has been utilized to study an intermetallic single-crystal superconductor NiBi3. Magnetoresistance at zero bias voltage of point contacts shows the occurrence suppression by polarized current, respectively. The gap value, its symmetry temperature dependence have determined using current. spin state in NiBi3 sample is be antiparallel a value 2Delta/kBT, dependence, combined show that bulk singlet s-wave superconductor.
Exchange bias (EB) is a cornerstone of modern magnetic memory and sensing technologies. Its extension to the realm two-dimensional (2D) van der Waals (vdW) magnets holds promise for revolutionary advancements in miniaturized efficient atomic spintronic devices. However, blocking temperature EB 2D vdW currently well below room ~130 K. This study reports robust phenomenon Fe3GaTe2 thin-layer devices, which significantly increases near-room-temperature record 280 Both direction magnitude can be...
Mn2CrGa-based Heusler compounds combining small magnetization with high spin polarization, fabricated by Fe and Pt substitution for Cr, are investigated experimentally discussed in terms of sublattice site occupancies. X-ray diffraction electron indicate that the parent alloy Mn2Cr0.6Fe0.4Ga normal cubic alloys substantial chemical disorder, whereas Mn2Cr0.6Pt0.4Ga crystallizes tetragonal D022 structure. Magnetization measurements structure is essentially ferrimagnetic, but alloying or...
Amorphous Fe x Si 1 -x thin films exhibit a striking enhancement in magnetization compared to crystalline with the same composition (0.45 < 0.75), and xray magnetic circular dichroism reveals an both spin orbital moments amorphous films.Density functional theory (DFT) calculations reproduce this enhanced also show relatively large spinpolarization at Fermi energy, seen experimentally Andreev reflection.Theory experiment that materials have decreased number of nearest neighbors reduced...
Zero bias anomalies have been observed in point contact Andreev reflection spectroscopy using conventional superconductors, and they cannot be suppressed by a highly spin-polarized current. By systematically varying the size of contact, are found to evolved from conductance dips outside superconducting gap. These anomalies, which depend on interface, not intrinsic superconductors but due large resistance change when region is driven normal an Oersted field.
Abstract Topological spin textures such as magnetic skyrmions 1-7 are promising candidates information carriers for next-generation memory-in-logic devices 8 . Antiferromagnetic 9-12 , compared to their ferromagnetic counterparts, innately possess high stability with respect external disturbance 13,14 and high-frequency dynamics 15-18 compatible ultrafast processing. However, deterministic creation reconfigurable switching of different antiferromagnetic have not been realized so far. Here,...
N-doped InSnZnO (ITZO:N) thin films as the active layer of film transistors (TFTs) were prepared using radio frequency (RF) magnetron sputtering at room temperature.