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Magnetic tunnel junctions (MTJs) play a crucial role in spintronic applications, particularly data storage and sensors. Especially as a non-volatile memory, MTJs have received substantial attention due to its CMOS compatibility, low power…

Tunneling electroresistance (TER) effect is the change in the electrical resistance of a ferroelectric tunnel junction (FTJ) associated with polarization reversal in the ferroelectric barrier layer. Here we predict that a FTJ with a…

材料科学 · 物理学 2009-11-26 M. Ye. Zhuravlev , Y. Wang , S. Maekawa , E. Y. Tsymbal

We propose the perspective of symmetry-selective resonance of the $\Delta_1$ states in the Fe/MgO/ZnO/MgO/Fe heterostructures, offering a broad landscape to design magnetic tunnel junctions (MTJs) that yield a towering tunnel…

介观与纳米尺度物理 · 物理学 2025-05-27 Sabarna Chakraborti , Arti Kashyap , Abhishek Sharma

The tunnel magnetoresistance (TMR) effect is one of the representative phenomena in spintronics. Ferromagnets, which have a net spin polarization, have been utilized for the TMR effect. Recently, by contrast, the TMR effect with…

介观与纳米尺度物理 · 物理学 2025-08-12 Katsuhiro Tanaka , Takuya Nomoto , Ryotaro Arita

Ferroelectric polarization switching in electrically controlled van der Waals multiferroic tunnel junctions (vdW-MFTJs) causes atomic migration, compromising device stability and fatigue resistance. Here we propose a fully magnetically…

材料科学 · 物理学 2025-05-20 Zhi Yan , Xujin Zhang , Jianhua Xiao , Cheng Fang , Xiaohong Xu

Using first-principles calculations, we explore the role of an anti-ferromagnetic heavy-metal, L1$_0$-IrMn, as a capping layer in a perpendicular magnetic tunnel junction (\emph{p}-MTJ). A comparative study is conducted by employing…

介观与纳米尺度物理 · 物理学 2022-04-14 Shradha Chandrashekhar Koli , Hangyu Zhou , Jiaqi Zhou , Bertrand Dupé , Weisheng Zhao

We present a circuit design of a spintronic oscillator based on magnetic tunnel junction. In this design, a dc current is passed through a magnetic tunnel junction which is connected to a feed-back wire below it. Any fluctuation in the…

介观与纳米尺度物理 · 物理学 2018-07-31 D. Dixit , K. Konishi , C. V. Tomy , Y. Suzuki , A. A. Tulapurkar

Here we demonstrate that both, tunnel magneto resistance (TMR) and resistive switching (RS), can be observed simultaneously in nano-scale magnetic tunnel junctions. The devices show bipolar RS of 6 % and TMR ratios of about 100 %. For each…

材料科学 · 物理学 2015-05-13 P. Krzysteczko , G. Reiss , A. Thomas

Altermagnets exhibit nonrelativistic spin splitting without net magnetization, establishing a new platform for next-generation spintronic devices. Although altermagnetic tunnel junctions (AMTJs) represent the most promising realizations,…

Hexagonal boron nitride ($h$-BN), with its strong in-plane bonding and good lattice match to hcp and fcc metals, offers a promising alternative barrier material for magnetic tunnel junctions (MTJs). Here, we investigate spin-dependent…

材料科学 · 物理学 2025-12-01 Ivan Kurniawan , Keisuke Masuda , Yoshio Miura

The exceptional properties of two-dimensional (2D) magnet materials present a novel approach to fabricate functional magnetic tunnel junctions (MTJ) by constructing full van der Waals (vdW) heterostructures with atomically sharp and clean…

We analyse the phenomenon of back-hopping in spin-torque induced switching of the magnetization in perpendicularly magnetized tunnel junctions. The analysis is based on single-shot time-resolved conductance measurements of the pulse-induced…

材料科学 · 物理学 2020-12-02 T. Devolder , O. Bultynck , P. Bouquin , V. D. Nguyen , S. Rao , D. Wan , B. Sorée , I. P. Radu , G. S. Kar , S. Couet

Magnetic tunnel junctions (MTJs) are elementary units of magnetic memory devices. For high-speed and low-power data storage and processing applications, fast reversal by an ultrashort laser pulse is extremely important. We demonstrate…

Van der Waals (vdW) heterostructures, stacking different two-dimensional materials, have opened up unprecedented opportunities to explore new physics and device concepts. Especially interesting are recently discovered two-dimensional…

材料科学 · 物理学 2019-09-04 Xinlu Li , Evgeny Y. Tsymbal , Jing-Tao Lü , Jia Zhang , Long You , Yurong Su

Spin-resolved electron symmetry filtering is a key mechanism behind giant tunneling magnetoresistance (TMR) in Fe/MgO/Fe and similar magnetic tunnel junctions (MTJs), providing room temperature functionality in modern spin electronics.…

介观与纳米尺度物理 · 物理学 2021-10-12 César González-Ruano , Coriolan Tiusan , Michel Hehn , Farkhad G. Aliev

Serial connection of multiple memory cells using perpendicular magnetic tunnel junctions (pMTJ) is proposed as a way to increase magnetic random access memory (MRAM) storage density. Multi-bit storage element is designed using pMTJs…

应用物理 · 物理学 2019-07-24 Piotr Rzeszut , Witold Skowroński , Sławomir Ziętek , Jerzy Wrona , Tomasz Stobiecki

Molecular bridges covalently bonded to two ferromagnetic electrodes can transform ferromagnetic materials and produce intriguing spin transport characteristics. This paper discusses the impact of molecule induced strong coupling on spin…

材料科学 · 物理学 2019-12-04 Pawan Tyagi , Edward Friebe

Oscillatory tunneling magnetoresistance (TMR) as a function of spacer thickness is investigated theoretically for a magnetic tunnel junction with a nonmagnetic layer inserted between the tunnel barrier and the ferromagnetic layer. TMR is…

介观与纳米尺度物理 · 物理学 2015-06-05 Changsik Choi , Byung Chan Lee

We theoretically investigate two different magnetic tunneling junctions (MTJs) with semiconductor barriers, CuInSe${}_{2}$ (CIS) and CuGaSe${}_{2}$ (CGS), which are the terminal compounds of recently reported mixed semiconductor barrier,…

材料科学 · 物理学 2017-01-23 Keisuke Masuda , Yoshio Miura

Ferromagnetic spin-valves and tunneling junctions are crucial for spintronics applications and are one of the most fundamental spintronics devices. Motivated by the potential unique advantages of antiferromagnets for spintronics, we…

介观与纳米尺度物理 · 物理学 2022-04-22 Srikrishna Ghosh , Aurelien Manchon , Jakub Železný