A5036975397- Magnetic and transport properties of perovskites and related materials
- Advanced Condensed Matter Physics
- Physics of Superconductivity and Magnetism
- Multiferroics and related materials
- Rare-earth and actinide compounds
- Magnetic properties of thin films
- Topological Materials and Phenomena
- Theoretical and Computational Physics
- Iron-based superconductors research
- Perovskite Materials and Applications
- Magnetic Properties and Applications
- Quantum and electron transport phenomena
- Crystal Structures and Properties
- Magnetic Properties and Synthesis of Ferrites
Huazhong University of Science and Technology
2017-2023
Wuhan National Laboratory for Optoelectronics
2020-2023
Xinyang Normal University
2017
Nontrivial spin structures in itinerant magnets can give rise to the topological Hall effect (THE) due interacting local magnetic moments and conductive electrons. While, series of materials, THE has mostly been observed at low temperatures far below room temperature (RT) limiting its potential applications. Here, we report anisotropic anomalous (AHE) near RT $\mathrm{La}{\mathrm{Mn}}_{2}{\mathrm{Ge}}_{2}$, a noncollinear ferromagnetic compound with Curie...
Rare-earth (RE)-based frustrated magnets, such as typical systems of combining strong spin–orbit coupling (SOC), geometric frustration, and anisotropic exchange interaction, can give rise to diverse exotic magnetic ground states quantum spin liquid. The discovery new RE-based materials is crucial for exploring the phases. Herein, we report synthesis, structure, properties a family melilite-type RE2Be2GeO7 (RE = Pr, Nd, Gd–Yb) compounds crystallized in tetragonal P4̅21m where RE3+ ions lay...
The topological Hall effect (THE) is an emergent magnetotransport phenomena in noncollinear itinerant magnets, and has been extensively studied magnetic materials hosting skyrmion lattices geometrically frustrated lattices. To explore THE with new nontrivial spin textures, we investigate the anisotropic a longitudinal conical-ordered magnet ${\mathrm{CeMn}}_{2}{\mathrm{Ge}}_{2}$ crystallized ${\mathrm{ThCr}}_{2}{\mathrm{Si}}_{2}$-type structure, which spiral propagation vector along $c$ axis...
The RAlX (R = Light rare earth; X Ge, Si) compounds, as a family of magnetic Weyl semimetal, have recently attracted growing attention due to the tunability nodes and its interactions with diverse magnetism by rare-earth atoms. Here, we report magnetotransport evidence electronic structure calculations on nontrivial band topology SmAlSi, new member this family. At low temperatures, SmAlSi exhibits large non-saturated magnetoresistance (MR) (as ∼5500% at 2 K 48 T) distinct Shubnikov-de Haas...
Compared to the low temperature memory effect observed in magnetic nanoparticles (NPs), here we report a room Ferrimagnetic (FiM)-Antiferromagnetic exchange coupled NiFe2O4-NiO nanogranular system, which is experimentally studied by different protocols of dc magnetization relaxation measurements below blocking TB = 345 K. The interfacial coupling between FiM NiFe2O4 clusters and spin-glassy like phase proposed provide an additional anisotropic energy, leading enhancement up temperature....
Strong anisotropic magnetotransport is reported in high-quality TaTe4 single crystals synthesized by flux methods. Large positive magnetoresistance (MR) and field-induced metal-semiconductor-like transition are observed at low temperatures with B perpendicular to c axis. The MR value reaches 3200% 9 T 2 K parallel a axis, contrast 79% for along Angle dependent rotated within ab plane displays eightfold symmetry pronounced Shubnikov-de Haas (SdH) oscillations temperatures. analysis of angle...
In pyrochlore iridates, nontrivial magnetic domain walls (DWs) carrying ferromagnetic (FM) moments were recently uncovered despite their bulk all-in-all-out (AIAO) antiferromagnetic (AFM) configurations. Here, we report a field (H) inversion asymmetric behavior of isothermal magnetization M(H) and magnetotransport in Eu2Ir2O7 single crystals, which is closely related to the exchange coupling between AIAO AFM domains FM DWs. After cooling (FC) below Neél temperature (TN), non-zero bias (EB)...
Abstract Spin liquids are exotic states with no spontaneous symmetry breaking down to zero-temperature because of the highly entangled and fluctuating spins in frustrated systems. Exotic excitations like magnetic monopoles, visons, photons may emerge from quantum spin ice states, a special kind pyrochlore lattices. These materials usually insulators, an exception iridate Pr 2 Ir O 7 , which was proposed as metallic liquid located at zero-field critical point. Here we report...
The rare-earth monopnictide compounds have recently received considerable attention in condensed matter physics because of their correlation between magnetism, crystallographic structure, and transport. Here, we report experimental observations high-magnetic-field-induced multiple metamagnetic transitions magnetic structures DyBi single crystals. external field up to 32 T is applied three distinct directions as $H//[001]$, $H//[011]$, $H//[111]$, which reveals anisotropic magnetism well...
We have studied the magnetization, dielectric permittivity, thermal expansion, and magnetostriction of ${\mathrm{Ni}}_{2}{\mathrm{NbBO}}_{6}$ single crystals. Different from that $ab$ plane, $c$ axis magnetization approaches zero at low magnetic fields a spin-flop transition happens around ${H}_{\mathrm{SF}}=3.65\phantom{\rule{0.16em}{0ex}}\mathrm{T}$. The results indicate is hard plane easy plane. high-field isothermal measured $T=4.2\phantom{\rule{0.16em}{0ex}}\mathrm{K}$ reveals...
Tuning of spin-orbit coupling and electron correlation effects in iridates by introducing or hole carriers can produce interesting physical phenomena. In this work, we experimentally investigate the electron/hole doping effect on magnetism electrical transport canted antiferromagnetic (AFM) double perovskite La2ZnIrO6, where hole/electron are realized two serial La2Zn1-x Li x IrO6 (0 ⩽ 0.35) La2Zn1-y Ga y 0.3) compounds, respectively. The x-ray photoelectron spectroscopy (XPS) reveals...
We perform a comparative magnetic study on two series of rare-earth (RE) based double perovskite iridates RE
We perform a comparative magnetic study on two series of rare-earth (RE) based double perovskite iridates RE2BIrO6 (RE=Pr,Nd,Sm-Gd;B=Zn,Mg), which show Mott insulating state with tunable charge energy gap from ~330 meV to ~560 by changing RE cations. For nonmagnetic RE=Eu cations, Eu2MgIrO6 shows antiferromagnetic (AFM) order and field-induced spin-flop transitions below Néel temperature (TN) in comparison the ferromagnetic (FM)-like behaviors Eu2ZnIrO6 at low temperatures....
We report our nuclear magnetic resonance (NMR) study on the structurally spin chain compound Ni$_2$NbBO$_6$ with complex coupling. The antiferromagnetic transition is monitored by line splitting resulting from staggered internal hyperfine field. coupling configuration proposed first-principle density functional theory (DFT) supported NMR spectral analysis. For dynamics, a prominent peak at $T\sim35$ K well above N\'{e}el temperature ($T_N\sim20$ $\mu_0H=10$ T) observed spin-lattice...
Rare-earth (RE) based frustrated magnets as typical systems of combining strong spin-orbit coupling, geometric frustration and anisotropic exchange interactions, can give rise to diverse exotic magnetic ground states such quantum spin liquid (QSL). The discovery new RE-based materials is crucial for exploring the phases. Herein, we report synthesis, structure properties a family melilite-type RE2Be2GeO7 (RE = Pr, Nd, Gd-Yb) compounds crystallized in tetragonal structure, where RE3+ ions lay...