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Perpendicular magnetic anisotropy was found to be highly sensitive to the nominal thickness and morphology of laterally heterogeneous CoPd films in the vicinity of the metal insulator transition. We used the effect to tune the anisotropy by…

Materials Science · Physics 2022-05-04 Gregory Kopnov , Alexander Gerber

It is a common perception that the transport of a spin current in polycrystalline metal is isotropic and independent of the polarization direction, even though spin current is a tensorlike quantity and its polarization direction is a key…

Mesoscale and Nanoscale Physics · Physics 2017-09-22 Chao Zhou , Fatih Kandaz , Yunjiao Cai , Chuan Qin , Mengwen Jia , Zhe Yuan , Yizheng Wu , Yi Ji

Spin-orbit coupling (SOC), the interaction between the electron spin and the orbital angular momentum, can unlock rich phenomena at interfaces, in particular interconverting spin and charge currents. Conventional heavy metals have been…

The dynamic behavior and stabilization of skyrmions in magnetic multilayers are critical for advancing spintronic and magnonic technologies. In our study, we investigate the static and dynamic properties of $[Re/Co(d_{Co})/Pt]_{20}$…

Magnetic systems exhibiting exchange bias effect are being considered as materials for applications in data storage devices, sensors and biomedicine. As the size of new mag- netic devices is being continuously reduced, the influence of…

Non-equilibrium spin transport in a magnetic tunnel junction comprising a single magnetic layer in the presence of interfacial spin-orbit interaction (SOI) is studied theoretically. The interfacial SOI generates a spin torque of the form…

Mesoscale and Nanoscale Physics · Physics 2015-05-30 A. Manchon

We report proximity effects of spin-orbit coupling in EuO$_{1-x}$ films capped with a Pt overlayer. Transport measurements suggest that current flows along a conducting channel at the interface between the Pt and EuO. The temperature…

Materials Science · Physics 2018-10-31 Gaurab Rimal , Jinke Tang

Ferrimagnets have the potential to play a key role in spintronics due to their high stability, low energy consumption, and rapid magnetic state switching. These characteristics are typically observed in ferrimagnetic materials near magnetic…

We investigate to what extent the magnetic properties of deposited nanostructures can be influenced by selecting as a support different surfaces of the same substrate material. Fully relativistic ab initio calculations were performed for Co…

Materials Science · Physics 2015-06-15 Ondrej Sipr , Sven Bornemann , Hubert Ebert , Sergey Mankovsky , Jiri Vackar , Jan Minar

Spin-transfer-torque magnetic random access memory (STT-MRAM) attracts extensive attentions due to its non-volatility, high density and low power consumption. The core device in STT-MRAM is CoFeB/MgO-based magnetic tunnel junction (MTJ),…

The thermal spin-transfer torque (TSTT) is an effect to switch the magnetic free layer in a magnetic tunnel junction by a temperature gradient only. We present ab initio calculations of the TSTT. In particular, we discuss the influence of…

Mesoscale and Nanoscale Physics · Physics 2015-06-17 Christian Heiliger , Michael Czerner

The concept of Perpendicular Shape-Anisotropy Spin-Transfer-Torque Magnetic Random-Access Memory tackles the downsize scalability limit of conventional ultrathin magnetic tunnel junctions (MTJ) below sub-20 nm technological nodes. This…

Mesoscale and Nanoscale Physics · Physics 2023-12-11 N. Caçoilo , L. D. Buda-Prejbeanu , B. Dieny , O. Fruchart , I. L. Prejbeanu

Efficient generation of spin-orbit torques (SOTs) is central for the exciting field of spin-orbitronics. Platinum, the archetypal spin Hall material, has the potential to be an outstanding provider for spin-orbit torques due to its giant…

Mesoscale and Nanoscale Physics · Physics 2021-08-17 Lijun Zhu , Daniel C. Ralph , Robert A Buhrman

Spin-orbit coupling in ferromagnets gives rise to the anomalous Hall effect and the anisotropic magnetoresistance, both of which can be used to create spin-transfer torques in a similar manner as the spin Hall effect. In this paper we show…

Materials Science · Physics 2014-11-19 Tomohiro Taniguchi , J. Grollier , M. D. Stiles

Fabrication of perpendicularly magnetized ferromagnetic films on various buffer layers, especially on numerous newly discovered spin-orbit torque (SOT) materials to construct energy-efficient spin-orbitronic devices, is a long-standing…

Mesoscale and Nanoscale Physics · Physics 2022-10-05 Kaihua Lou , Tunan Xie , Qianwen Zhao , Baiqing Jiang , ChaoChao Xia , Hanying Zhang , Zhihong Yao , Chong Bi

We discuss a spin-transfer torque device, where the role of the soft ferromagnetic layer is played by a magnetic particle or a magnetic molecule, in weak tunnel contact with two spin polarized leads. We investigate if the magnetization of…

Mesoscale and Nanoscale Physics · Physics 2015-10-19 P. Gartland , D. Davidovic

Spintronic devices as alternatives to traditional semiconductor-based electronic devices attract considerable interest as they offer zero quiescent power, built-in memory, scalability, and reconfigurability. To realize spintronic logic…

Applied Physics · Physics 2017-12-04 Seung-heon Chris Baek , Kyung-Woong Park , Deok-Sin Kil , Kyung-Jin Lee , Byong-Guk Park

Synthetic ferrimagnets are an attractive materials class for spintronics as they provide access to all-optical switching of magnetization and, at the same time, allow for ultrafast domain wall motion at angular momentum compensation. In…

We report observations of tunneling anisotropic magnetoresitance (TAMR) in vertical tunnel devices with a ferromagnetic multilayer-(Co/Pt) electrode and a non-magnetic Pt counter-electrode separated by an AlOx barrier. In stacks with the…

Materials Science · Physics 2009-11-13 B. G. Park , J. Wunderlich , D. A. Williams , S. J. Joo , K. Y. Jung , K. H. Shin , K. Olejnik , A. B. Shick , T. Jungwirth

Topological insulators and giant spin-orbit toque switching of nanomagnets are one of the frontier topics for the development of energy-efficient spintronic devices. Spin-circuit representations involving different materials and phenomena…

Mesoscale and Nanoscale Physics · Physics 2023-06-29 Kuntal Roy