Visible-Light Self-Powered Photodetector with High Sensitivity Based on the Type-II Heterostructure of CdPSe₃/MoS₂

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(25), С. 32334 - 32343

Опубликована: Июнь 11, 2024

Transition metal thiophosphates (MTPs) are a group of emerging van der Waals materials with widely tunable band gaps. In the MTP family, CdPSe

Язык: Английский

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Observation of anomalous Hall effect in proximity coupled Cr₂Ge₂Te₆/Graphene heterostructures

Nanoscale, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

In heterostructures of Cr 2 Ge Te 6 (CGT)/graphene, the anomalous Hall effect is clearly observed through experiments, which caused by spin polarization in graphene induced magnetic proximity effect.

Язык: Английский

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Dispersive Dark Excitons in van der Waals Ferromagnet CrI3

Physical Review X, Год журнала: 2025, Номер 15(1)

Опубликована: Фев. 25, 2025

Spin-flip dark excitons are optical-dipole-forbidden quasiparticles with remarkable potential in optoelectronics, especially when they realized within cleavable van der Waals materials. Despite this potential, have not yet been definitively identified ferromagnetic Here, we report two a model material CrI3 using high-resolution resonant inelastic x-ray scattering and show that feature narrower linewidths compared to the bright previously reported material. These shown spin-flip character, disperse as function of momentum, change through transition temperature. Given versatility materials, these hold promise for new types magneto-optical functionality. Published by American Physical Society 2025

Язык: Английский

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Two-Fold Enhancement of Curie Temperature in Monolayer CrI3 by High Pressure

Metals, Год журнала: 2025, Номер 15(4), С. 398 - 398

Опубликована: Апрель 2, 2025

In recent years, the discovery of two-dimensional (2D) intrinsically ferromagnetic monolayer CrI3 has opened up promising avenues for advancement spintronic devices. Nevertheless, relatively low Curie temperature poses a significant challenge practical applications. Herein, we determine changes in superexchange interaction coupling caused under pressure by using first-principles calculations and Monte Carlo simulations. Based on coupling, effect applying high is investigated. With coefficient 2.0%, enhanced to 97.3 K, which nearly double that without pressure. addition, direction easy magnetization axis from out-of-plane in-plane one when 1.2%. Meanwhile, band gap can be transformed indirect direct Our work enriches process modulating magnetic electronic properties 2D materials.

Язык: Английский

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Reconstruction of nontrivial magnetization textures from magnetic field images using neural networks

Physical Review Applied, Год журнала: 2025, Номер 23(4)

Опубликована: Апрель 4, 2025

Язык: Английский

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Nonreciprocal Phonons in PT -Symmetric Antiferromagnets

Physical Review Letters, Год журнала: 2025, Номер 134(20)

Опубликована: Май 20, 2025

Язык: Английский

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Surface-Dominated Quantum-Metric-Induced Nonlinear Transport in the Layered Antiferromagnet CrSBr

Nano Letters, Год журнала: 2025, Номер unknown

Опубликована: Май 27, 2025

The van der Waals (vdW) antiferromagnet CrSBr has recently garnered significant attention due to its air stability, high magnetic transition temperature, and semiconducting properties. We investigate nonlinear transport properties identify a quantum-metric-dipole (QMD)-induced anomalous Hall effect longitudinal resistivity, which switch signs upon reversing the Néel vector. QMD originates from Dirac nodal lines near conduction band edge within experimentally achievable doping range. Knowing weak interlayer coupling, it is unexpected that conductivities do not scale with sample thickness but are dominantly contributed by surface layers. In electron-doped region, top layer dominates response, while three layers contribute most in hole-doped region. Our results establish topological as guiding principle design high-performance quantum materials, we suggest surface-sensitive devices will provide new avenues for electronic applications.

Язык: Английский

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Tunable ferrimagnetism and electrical transport properties in ferrimagnetic Mn3Si2Te6 through Cr doping

Applied Physics Letters, Год журнала: 2025, Номер 126(21)

Опубликована: Май 26, 2025

The layered ferrimagnet Mn3Si2Te6 has emerged as a paradigm-breaking system combining topological nodal-line band and record-breaking colossal magnetoresistance effect (CMR). Here, we report the doping effects of magnetism electrical transport properties in Mn3-xCrxSi2Te6. We find Curie temperature Tc is significantly suppressed from 78 K for undoped sample to 57 x = 0.6 sample, magnetization magnetic anisotropy are also upon Cr doping, respectively. However, properties, resistivity increased monotonously CMR enhanced low doped samples, which can be attributed strengthened coupling doping-induced broadening activation energy gap. Our work reveals ferrimagnetism effectively tuned by establishing tunable knob designing modulating desired quantum phases this magnet.

Язык: Английский

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Kagomerization of transition metal monolayers induced by two-dimensional hexagonal boron nitride

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Июнь 6, 2024

Abstract The kagome lattice is an exciting solid state physics platform for the emergence of nontrivial quantum states driven by electronic correlations: topological effects, unconventional superconductivity, charge and spin density waves, unusual magnetic such as liquids. While lattices have been realized in complex multi-atomic bulk compounds, here we demonstrate from first-principles a process that dub kagomerization, which fabricate two-dimensional monolayers transition metals utilizing hexagonal boron nitride ( h -BN) overlayer. Surprisingly, -BN induces large rearrangement metal atoms supported on fcc(111) heavy-metal surface. This reconstruction found to be rather generic this type heterostructures has profound impact underlying properties, ultimately stabilizing various solitons skyrmions bimerons. Our findings call reconsideration merely passive capping layer, showing its potential not only reconstructing atomic structure material, e.g. through kagomerization films, but also enabling phases are highly sought next generation device technologies.

Язык: Английский

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Nanocomposites of Three-Dimensional Graphene Nanofoams with Polymers—Fundamentals and Progressions

Polymer-Plastics Technology and Materials, Год журнала: 2024, Номер unknown, С. 1 - 26

Опубликована: Сен. 12, 2024

Язык: Английский

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