scholarly journals Current-driven magnetization switching in a van der Waals ferromagnet Fe3GeTe2

2019 ◽  
Vol 5 (8) ◽  
pp. eaaw8904 ◽  
Author(s):  
Xiao Wang ◽  
Jian Tang ◽  
Xiuxin Xia ◽  
Congli He ◽  
Junwei Zhang ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Van Der Waals ◽  
The Other ◽  
Bilayer Structure ◽  
Spin Orbit ◽  
Two Dimensional ◽  
Magnetization Switching ◽  
Spintronic Devices ◽  
Low Dimensional ◽  
Low Dimensional Materials

The recent discovery of ferromagnetism in two-dimensional (2D) van der Waals (vdW) materials holds promises for spintronic devices with exceptional properties. However, to use 2D vdW magnets for building spintronic nanodevices such as magnetic memories, key challenges remain in terms of effectively switching the magnetization from one state to the other electrically. Here, we devise a bilayer structure of Fe3GeTe2/Pt, in which the magnetization of few-layered Fe3GeTe2 can be effectively switched by the spin-orbit torques (SOTs) originated from the current flowing in the Pt layer. The effective magnetic fields corresponding to the SOTs are further quantitatively characterized using harmonic measurements. Our demonstration of the SOT-driven magnetization switching in a 2D vdW magnet could pave the way for implementing low-dimensional materials in the next-generation spintronic applications.

scholarly journals Prediction of giant and ideal Rashba-type splitting in ordered alloy monolayers grown on a polar surface

2020 ◽  
Author(s):  
Mingxing Chen ◽  
Feng Liu
Keyword(s):  
Majorana Fermions ◽  
Spin Orbit ◽  
First Principles Calculations ◽  
Surface Alloying ◽  
Orbit Splitting ◽  
Polar Surface ◽  
Spintronic Devices ◽  
Spin Orbit Splitting ◽  
Low Dimensional ◽  
Low Dimensional Materials

Abstract A large and ideal Rashba-type spin-orbit splitting is desired for the applications of materials in spintronic devices and the detection of Majorana Fermions in solids. Here, we propose an approach to achieve giant and ideal spin-orbit splittings through a combination of ordered surface alloying and interface engineering, that is, growing alloy monolayers on an insulating polar surface. We illustrate this unique strategy by means of first-principles calculations of buckled hexagonal monolayers of SbBi and PbBi supported on Al2O3(0001). Both systems display ideal Rashba-type states with giant SO splittings, characterized with energy offsets over 600 meV and momentum offsets over 0.3 Å −1, respectively. Our study thus points to an effective way of tuning spin-orbit splitting in low-dimensional materials to draw immediate experimental interest.

Tunable Magnetoelectric Coupling and Electrical Features in an Ultrathin Cr2Si2Te6 / In2Se3 Heterostructure

2022 ◽  
Author(s):  
Shilei Ji ◽  
Xin Fu ◽  
Yile Wang ◽  
Xianzhi Li ◽  
Chuye Quan ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Magnetoelectric Coupling ◽  
Two Dimensional ◽  
Multiferroic Materials ◽  
Spintronic Devices ◽  
Potential Applications ◽  
Low Dimensional

Two-dimensional (2D) van der Waals (vdW) heterostructures based on multiferroic materials have potential applications in novel low-dimensional spintronic devices. In this work, we have investigated a strong magnetoelectric coupling and...

Nonvolatile electrical control of 2D Cr2Ge2Te6 and intrinsic half metallicity in multiferroic hetero-structures

Nanoscale ◽  
2021 ◽  
Author(s):  
Asif Ilyas ◽  
Shuling Xiang ◽  
Miaogen Chen ◽  
Muhammad Yar Khan ◽  
Hua Bai ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Two Dimensional ◽  
Half Metallicity ◽  
Spintronic Devices ◽  
Electrical Control

The electrical control of two-dimensional (2D) van der Waals ferromagnets is a step forward for the realization of spintronic devices.

Discovery of intrinsic two-dimensional antiferromagnets from transition-metal borides

Nanoscale ◽  
2021 ◽  
Author(s):  
Shiyao Wang ◽  
Nanxi Miao ◽  
Kehe Su ◽  
Vladislav A. Blatov ◽  
Junjie Wang
Keyword(s):  
Transition Metal ◽  
Magnetic Materials ◽  
Van Der Waals ◽  
Two Dimensional ◽  
Spintronic Devices ◽  
Metal Borides

Intrinsic two-dimensional (2-D) magnets are promising materials for developing advanced spintronic devices. Few have already been synthesized from the exfoliation of the van der Waals magnetic materials. In this work,...

scholarly journals Kagome van-der-Waals Pd3P2S8 with flat band

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Seunghyun Park ◽  
Soonmin Kang ◽  
Haeri Kim ◽  
Ki Hoon Lee ◽  
Pilkwang Kim ◽  
...  
Keyword(s):  
Diamagnetic Susceptibility ◽  
Van Der Waals ◽  
Localized States ◽  
Flat Band ◽  
Two Dimensional ◽  
Kagome Lattice ◽  
Kagomé Lattice ◽  
Localized State ◽  
Low Dimensional ◽  
Important Structure

AbstractWith the advanced investigations into low-dimensional systems, it has become essential to find materials having interesting lattices that can be exfoliated down to monolayer. One particular important structure is a kagome lattice with its potentially diverse and vibrant physics. We report a van-der-Waals kagome lattice material, Pd3P2S8, with several unique properties such as an intriguing flat band. The flat band is shown to arise from a possible compact-localized state of all five 4d orbitals of Pd. The diamagnetic susceptibility is precisely measured to support the calculated susceptibility obtained from the band structure. We further demonstrate that Pd3P2S8 can be exfoliated down to monolayer, which ultimately will allow the possible control of the localized states in this two-dimensional kagome lattice using the electric field gating.

scholarly journals Image polaritons in van der Waals crystals

Nanophotonics ◽  
2022 ◽  
Vol 0 (0) ◽  
Author(s):  
Sergey G. Menabde ◽  
Jacob T. Heiden ◽  
Joel D. Cox ◽  
N. Asger Mortensen ◽  
Min Seok Jang
Keyword(s):  
Van Der Waals ◽  
Mirror Image ◽  
Propagation Loss ◽  
Strong Light ◽  
New Class ◽  
Close Proximity ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Low Dimensional ◽  
Low Dimensional Materials

Abstract Polaritonic modes in low-dimensional materials enable strong light–matter interactions and the manipulation of light on nanometer length scales. Very recently, a new class of polaritons has attracted considerable interest in nanophotonics: image polaritons in van der Waals crystals, manifesting when a polaritonic material is in close proximity to a highly conductive metal, so that the polaritonic mode couples with its mirror image. Image modes constitute an appealing nanophotonic platform, providing an unparalleled degree of optical field compression into nanometric volumes while exhibiting lower normalized propagation loss compared to conventional polariton modes in van der Waals crystals on nonmetallic substrates. Moreover, the ultra-compressed image modes provide access to the nonlocal regime of light–matter interaction. In this review, we systematically overview the young, yet rapidly growing, field of image polaritons. More specifically, we discuss the dispersion properties of image modes, showcase the diversity of the available polaritons in various van der Waals materials, and highlight experimental breakthroughs owing to the unique properties of image polaritons.

Magnetic two-dimensional van der Waals materials for spintronic devices

2021 ◽  
Author(s):  
Yu Zhang ◽  
Hongjun Xu ◽  
Jiafeng Feng ◽  
Hao Wu ◽  
Guoqiang Yu ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Two Dimensional ◽  
Spintronic Devices ◽  
Van Der Waals Materials

Recent advances in two-dimensional-material-based sensing technology toward health and environmental monitoring applications

Nanoscale ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 3535-3559 ◽  
Author(s):  
Deepika Tyagi ◽  
Huide Wang ◽  
Weichun Huang ◽  
Lanping Hu ◽  
Yanfeng Tang ◽  
...  
Keyword(s):  
Environmental Monitoring ◽  
Human Body ◽  
Two Dimensional ◽  
Detection Strategy ◽  
Recent Advances ◽  
Sensing Technology ◽  
Monitoring Applications ◽  
Low Dimensional ◽  
Low Dimensional Materials

Low dimensional materials based sensors have improved the detection strategy for sensing complex substances present in environment and human body.

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