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Spintronics in ferromagnetic metals is built on a complementary set of phenomena in which magnetic configurations influence transport coefficients and transport currents alter magnetic configurations. In this Letter we propose that…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. S. Nunez , R. A. Duine , A. H. MacDonald

Organic multiferroic tunnel junctions (OMFTJs) with multi-resistance states have been proposed and drawn intensive interests due to their potential applications, for examples of memristor and spintronics based synapse devices. The…

The independent control of two magnetic electrodes and spin-coherent transport in magnetic tunnel junctions are strictly required for tunneling magnetoresistance, while junctions with only one ferromagnetic electrode exhibit tunneling…

Perpendicular magnetic tunnel junctions (p-MTJs) switched utilizing bipolar electric fields have extensive applications in energy-efficient memory and logic devices. Voltage-controlled magnetic anisotropy linearly lowers the energy barrier…

GaMnAs-based magnetic tunnel junction (MTJ) devices are characterized by in-plane and perpendicular-toplane magnetotransport at low temperatures. Perpendicular-to-plane transport reveals the typical tunneling magnetotransport (TMR) signal.…

Mesoscale and Nanoscale Physics · Physics 2015-06-11 Aymen Ben Hamida , Florian Bergmann , Klaus Pierz , Hans Werner Schumacher

Topologically protected whirling magnetic textures could emerge as data carriers in next-generation post-Moore computing. Such textures are abundantly observed in ferromagnets (FMs); however, their antiferromagnetic (AFM) counterparts are…

Materials Science · Physics 2022-07-13 Jack Harrison , Hariom Jani , Paolo G. Radaelli

Atomic intercalation offers a powerful route for engineering two-dimensional (2D) materials by precisely tuning interlayer electronic coupling and spin configurations. Here, we propose a generic strategy for the construction of fully 2D…

Materials Science · Physics 2025-05-09 Zhi Yan , Jianhua Xiao , Xujin Zhang , Cheng Fang , Xiaohong Xu

Antiferromagnetic (AFM) spintronics, where magneto-transport is governed by an antiferromagnet instead of a ferromagnet, opens fascinating new perspectives for both fundamental research and device technology, owing to their intrinsic…

Materials Science · Physics 2021-10-26 Haowen Wang , Wei Wang , Ni Hu , Tianci Duan , Songliu Yuan , Shuai Dong , Chengliang Lu , Jun-Ming Liu

We propose a new class of non-uniform superlattice magnetic tunnel junctions (Nu-SLTJs) with the Linear, Gaussian, Lorentzian, and P\"oschl-teller width and height based profiles manifesting a sizable enhancement in the TMR($\approx…

Mesoscale and Nanoscale Physics · Physics 2023-03-31 Sabarna Chakraborti , Abhishek Sharma

The discovery of spin torque transfer (STT) has lead to a significant advance in the development of spintronic devices. Novel structures and materials have been studied in order to improve the performance of the magnetic tunnel junctions…

Mesoscale and Nanoscale Physics · Physics 2009-08-24 Xiaofeng Yao , Yisong Zhang , Andrew Lyle , Roger Malmhall , Rajiv Ranjan , Lei Lu , Mingzhong Wu , Hao Wang , Ying Jing , Jian-Ping Wang

Half-metallic Co-based full Heusler alloys have captured considerable attention of the researchers in the realm of spintronic applications, owing to their remarkable characteristics such as exceptionally high spin polarization at Fermi…

Applied Physics · Physics 2023-09-19 Joydipto Bhattacharya , Ashima Rawat , Ranjit Pati , Aparna Chakrabarti , Ravindra Pandey

Spin-transfer ferromagnetic resonance (ST-FMR) in symmetric magnetic tunnel junctions (MTJs) with a varied thickness of the MgO tunnel barrier (0.75 nm < $t_{MgO}$ < 1.05 nm) is studied using the spin-torque diode effect. The application of…

The effects of the spin-orbit interaction on the tunneling magnetoresistance of ferromagnet/semiconductor/normal metal tunnel junctions are investigated. Analytical expressions for the tunneling anisotropic magnetoresistance (TAMR) are…

Mesoscale and Nanoscale Physics · Physics 2009-05-06 Alex Matos-Abiague , Jaroslav Fabian

Physical devices exhibiting stochastic functions with low energy consumption and high device density have the potential to enable complex probability-based computing algorithms, accelerate machine learning tasks, and enhance hardware…

Materials Science · Physics 2024-09-17 Dooyong Koh , Qiuyuan Wang , Brooke C. McGoldrick , Chung-Tao Chou , Luqiao Liu , Marc A. Baldo

We investigated spin dependent transport through Fe/GaAs/Fe tunnel junctions. The tunneling magnetoresistance effect (TMR) was probed for different types of Fe/GaAs interfaces. For interfaces cleaned by hydrogen plasma the TMR effect is…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 J. Moser , M. Zenger , C. Gerl , D. Schuh , R. Meier , P. Chen , G. Bayreuther , W. Wegscheider , D. Weiss , C. -H. Lai , R. -T. Huang , M. Kosuth , H. Ebert

Antiferromagnetic (AFM) skyrmions, which are resistant to both the skyrmion Hall effect and external magnetic perturbations, are expected to be promising candidates for next-generation spintronics devices. Despite being observed in bulk…

Mesoscale and Nanoscale Physics · Physics 2024-05-16 Weiyi Pan , Zhiming Xu

In quasi-magnetic tunnel junctions (QMTJs) with a EuS spin filter tunnel barrier between Al and Co electrodes, we observed large magnetoresistance (MR). The bias dependence shows an abrupt increase of MR ratio in high bias voltage, which is…

Materials Science · Physics 2009-11-13 T. Nagahama , T. S. Santos , J. S. Moodera

Through Bayesian optimization and the least absolute shrinkage and selection operator (LASSO) technique combined with first-principles calculations, we investigated the tunnel magnetoresistance (TMR) effect of…

Materials Science · Physics 2020-05-27 Shenghong Ju , Yoshio Miura , Kaoru Yamamoto , Keisuke Masuda , Ken-ichi Uchida , Junichiro Shiomi

Strain-mediated voltage control of magnetization in piezoelectric/ferromagnetic systems is a promising mechanism to implement energy-efficient spintronic memory devices. Here, we demonstrate giant voltage manipulation of MgO magnetic tunnel…

Mesoscale and Nanoscale Physics · Physics 2016-09-02 Zhengyang Zhao , Mahdi Jamali , Noel D'Souza , Delin Zhang , Supriyo Bandyopadhyay , Jayasimha Atulasimha , Jian-Ping Wang

As an unconventional magnet, altermagnetism attracts great interest in condensed matter physics and applies a new research platform for the spintronics. Since the tunneling magnetoresistance (TMR) effect is an important research aspect in…

Mesoscale and Nanoscale Physics · Physics 2025-09-09 Yu-Fei Sun , Yue Mao , Yu-Chen Zhuang , Qing-Feng Sun