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Van der Waals heterostructures have risen as a tunable platform to combine different electronic orders, due to the flexibility in stacking different materials with competing symmetry broken states. Among them, van der Waals ferromagnets…

超导电性 · 物理学 2022-02-09 Faluke Aikebaier , Tero T. Heikkilä , J. L. Lado

We examined what interactions control the sign and strength of the interlayer coupling in van der Waals ferromagnets such as Fe3-xGeTe2, Cr2Ge2Te6, CrI3 and VI3, to find that high-spin orbital interaction across the van der Waals gaps are a…

强关联电子 · 物理学 2022-09-07 Hyun-Joo Koo , Reinhard K. Kremer , Myung-Hwan Whangbo

Magnetic tunnel junctions (MTJs) have been widely applied in spintronic devices for efficient spin detection through the imbalance of spin polarization at the Fermi level. The van der Waals (vdW) nature of two-dimensional (2D) magnets with…

材料科学 · 物理学 2024-01-31 Wen Jin , Xinlu Li , Gaojie Zhang , Hao Wu , Xiaokun Wen , Li Yang , Jie Yu , Bichen Xiao , Wenfeng Zhang , Jia Zhang , Haixin Chang

A detailed investigation of a superconducting spin-triplet valve is presented. This spin-valve consists of a superconducting film covering a metal with an intrinsic spiral magnetic order, which could result from competing isotropic…

超导电性 · 物理学 2022-09-30 N. G. Pugach , M. O. Safonchik , V. I. Belotelov , T. Ziman , T. Champel

Electron valleys in transition-metal dichalcogenide monolayers drive novel physics and allow designing multifunctional architectures for applications. We propose to manipulate the electron valleys in these systems for spin/valley filter and…

介观与纳米尺度物理 · 物理学 2021-11-15 Ao Zhang , Kaike Yang , Yun Zhang , Anlian Pan , Mingxing Chen

Multiferroic tunnel junctions (MFTJs) have aroused significant interest due to their functional properties useful for non-volatile memory devices. So far, however, all the existing MFTJs have been based on perovskite-oxide heterostructures…

介观与纳米尺度物理 · 物理学 2020-12-08 Yurong Su , Xinlu Li , Meng Zhu , Jia Zhang , Long You , Evgeny Y. Tsymbal

We show that engineering of tunnel barriers forming at the interfaces of a one-dimensional spin valve provides a viable path to a strong gate-voltage tunability of the magnetoresistance effect. In particular, we investigate theoretically a…

介观与纳米尺度物理 · 物理学 2017-02-17 Maciej Misiorny , Carola Meyer

Realisation of practical spintronic devices relies on the ability to create and detect pure spin currents. In graphene-based spin valves this is usually achieved by injection of spin-polarized electrons from ferromagnetic contacts via a…

We use a previously proposed theory for the temperature dependence of tunneling magnetoresistance to shed light on ongoing efforts to optimize spin valves. First we show that a mechanism in which spin valve performance at finite…

介观与纳米尺度物理 · 物理学 2014-09-11 Karin Everschor-Sitte , Matthias Sitte , Allan H. MacDonald

The concept of swapping the two most important spin interactions -- exchange and spin-orbit coupling -- is proposed based on two-dimensional multilayer van der Waals heterostructures. Specifically, we show by performing realistic ab initio…

介观与纳米尺度物理 · 物理学 2020-11-05 Klaus Zollner , Martin Gmitra , Jaroslav Fabian

The integration of magnetic material with semiconductors has been fertile ground for fundamental science as well as of great practical interest toward the seamless integration of information processing and storage. Here we create van der…

In considering a novel function in ferromagnetic tunnel junctions consisting of ferromagnet(FM)/barrier/FM junctions, we theoretically investigate multiple valued (or multi-level) cell property, which is in principle realized by sensing…

介观与纳米尺度物理 · 物理学 2007-05-23 Satoshi Kokado , Kikuo Harigaya

Efficiently manipulating the magnetization of van der Waals ferromagnets has attracted considerable interest in developing room-temperature two-dimensional material-based memory and logic devices. Here, taking advantage of the unique…

Momentum-resolved spin-polarized bands are a key ingredient in many proposed spintronic devices, but their existence often relies on lattice commensurability or strong spin-orbit coupling. By a large-scale DFT calculation (up to 4212…

材料科学 · 物理学 2024-12-13 Zhigang Song , Xiuying Zhang , Julian Klein , Jonathan Curtis , Frances M. Ross , Prineha Narang

In a ferromagnet/superconductor/ferromagnet (F/S/F) superconducting spin-valve (SSV), a change of the magnetization alignment of the two F layers modulates the critical temperature (Tc) of the S layer. The Tc-switching (the SSV effect) is…

超导电性 · 物理学 2024-07-19 Tomohiro Kikuta , Sachio Komori , Keiichiro Imura , Tomoyasu Taniyama

Information transport and processing by pure magnonic spin currents in insulators is a promising alternative to conventional charge-current driven spintronic devices. The absence of Joule heating as well as the reduced spin wave damping in…

Two channels of the sd exchange interaction are considered in magnetic junctions. The first channel describes the interaction of transversal spins with the lattice magnetization. The second one describes the interaction of longitudinal…

材料科学 · 物理学 2010-10-22 S. G. Chigarev , E. M. Epshtein , Yu. V. Gulyaev , P. E. Zilberman

A giant tunneling electroresistance effect may be achieved in a ferroelectric tunnel junction by exploiting the magnetoelectric effect at the interface between a ferroelectric barrier and magnetic La1-xSrxMnO3 electrode. Using…

材料科学 · 物理学 2011-04-18 J. D. Burton , E. Y. Tsymbal

The magnetic tunnel junction (MTJ) is a backbone device for spintronics. Realizing next generation energy efficient MTJs will require operating mechanisms beyond the standard means of applying magnetic fields or large electrical currents.…

The field of 2D magnetic materials has paved the way for the development of spintronics and nanodevices with new functionalities. Utilizing antiferromagnetic materials, in addition to layered van der Waals (vdW) ferromagnetic materials, has…

材料科学 · 物理学 2023-10-05 Lishu Zhang , Hui Li , Yanyan Jiang , Zishen Wang , Tao Li , Sumit Ghosh