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Current-induced spin-orbit torques (SOTs) are of interest for fast and energy-efficient manipulation of magnetic order in spintronic devices. To be deterministic, however, switching of perpendicularly magnetized materials by SOT requires a…

Control over quantum systems is typically achieved by time-dependent electric or magnetic fields. Alternatively, electronic spins can be controlled by spin-polarized currents. Here we demonstrate coherent driving of a single spin by a…

Mesoscale and Nanoscale Physics · Physics 2024-06-26 Stepan Kovarik , Richard Schlitz , Aishwarya Vishwakarma , Dominic Ruckert , Pietro Gambardella , Sebastian Stepanow

We analyse the appearance of a mechanical torque that acts on a chiral molecule: a single-stranded DNA, in which the spin-orbit interaction is expected to induce a spin-selectivity effect. The mechanical torque is shown to appear as a…

Mesoscale and Nanoscale Physics · Physics 2019-05-22 N. Sasao , H. Okada , Y. Utsumi , O. Entin-Wohlman , A. Aharony

We report the observation of the intrinsic damping-like spin-orbit torque (SOT) arising from the Berry curvature in metallic-magnet/CuO$_x$ heterostructures. We show that a robust damping-like SOT, an order of magnitude larger than a…

Materials Science · Physics 2018-07-11 Tenghua Gao , Alireza Qaiumzadeh , Hongyu An , Akira Musha , Yuito Kageyama , Ji Shi , Kazuya Ando

It has been demonstrated that the switching of perpendicular magnetization can be achieved with spin orbit torque (SOT) at an ultrafast speed and low energy consumption. However, to make the switching deterministic, an undesirable magnetic…

Applied Physics · Physics 2019-07-24 Zhaohao Wang , Zuwei Li , Min Wang , Bi Wu , Daoqian Zhu , Weisheng Zhao

Field-free switching of perpendicular magnetization has been observed in an epitaxial L1$_1$-ordered CoPt/CuPt bilayer and attributed to spin-orbit torque (SOT) arising from the crystallographic $3m$ point group of the interface. Using a…

Materials Science · Physics 2024-12-31 Wuzhang Fang , Edward Schwartz , Alexey A. Kovalev , K. D. Belashchenko

Deterministic magnetization switching using spin-orbit torque (SOT) has recently emerged as an efficient means to electrically control the magnetic state of ultrathin magnets. The SOT switching still lacks in oscillatory switching…

A new proposal is given to control local magnetic field in a molecular junction. In presence of finite bias a net circular current is established in the molecular ring which induces a magnetic field at its centre. Allowing a direct coupling…

Mesoscale and Nanoscale Physics · Physics 2017-03-07 Moumita Patra , Santanu K. Maiti

Electrical manipulation of magnetization is essential for integration of magnetic functionalities such as magnetic memories and magnetic logic devices into electronic circuits. The current induced spin-orbit torque (SOT) in heavy…

Current-induced control of magnetization in ferromagnets using spin-orbit torque (SOT) has drawn attention as a new mechanism for fast and energy efficient magnetic memory devices. Energy-efficient spintronic devices require a spin-current…

Spin orbit torque (SOT) provides an efficient way of generating spin current that promises to significantly reduce the current required for switching nanomagnets. However, an in-plane current generated SOT cannot deterministically switch a…

We present calculations of spin-dependent electron transport through single organic molecules bridging pairs of iron nanocontacts. We predict the magnetoresistance of these systems to switch from positive to negative with increasing applied…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Hugh Dalgleish , George Kirczenow

Current-induced spin-orbit torque (SOT) in normal metal/ferromagnet (NM/FM) bilayers bears great promise for technological applications, but the microscopic origin of purely interfacial SOTs in ultra-thin systems is not yet fully…

Mesoscale and Nanoscale Physics · Physics 2023-02-02 Alessandro Veneri , David T. S. Perkins , Aires Ferreira

We present harmonic transverse voltage measurements of current-induced thermoelectric and spin-orbit torque (SOT) effects in ferromagnet/normal metal bilayers, in which thermal gradients produced by Joule heating and SOT coexist and give…

Mesoscale and Nanoscale Physics · Physics 2017-04-25 Can Onur Avci , Kevin Garello , Mihai Gabureac , Abhijit Ghosh , Andreas Fuhrer , Santos F. Alvarado , Pietro Gambardella

Current induced spin-orbit torques (SOTs) in Fe/Pt bilayers have been investigated utilizing the spin-orbit torque ferromagnetic resonance (SOT-FMR) measurement. Characterization of thin films with different thicknesses indicates existence…

Applied Physics · Physics 2021-09-16 Hongshi Li , Mahdi Jamali , Delin Zhang , Xuan Li , Jian-Ping Wang

Spintronics, the use of spin of an electron instead of its charge, has received huge attention from research communities for different applications including memory, interconnects, logic implementation, neuromorphic computing, and many…

While current-induced spin-orbit torques (SOTs) have been extensively studied in ferromagnets and antiferromagnets, ferrimagnets have been less studied. Here we report the presence of enhanced spin-orbit torques resulting from negative…

Materials Science · Physics 2017-05-24 Rahul Mishra , Jiawei Yu , Xuepeng Qiu , M. Motapothula , T. Venkatesan , Hyunsoo Yang

Electrical control of magnetization is of crucial importance for integrated spintronics devices. Spin-orbit torques (SOT) in heavy-metal/ferromagnetic heterostructures have emerged as promising tool to achieve efficiently current-induced…

Materials Science · Physics 2021-07-21 Leandro Salemi , Marco Berritta , Peter M. Oppeneer

The magnitude of spin-orbit torque (SOT), exerted to a ferromagnet (FM) from an adjacent heavy metal (HM), strongly depends on the amount of spin currents absorbed in the FM. We exploit the large spin absorption at the Ru interface to…

We study theoretically spin transport through a single-molecule magnet (SMM) in the sequential and cotunneling regimes, where the SMM is weakly coupled to one ferromagnetic and one normalmetallic leads. By a master-equation approach, it is…

Mesoscale and Nanoscale Physics · Physics 2017-09-19 Haiqing Xie , Fuming Xu , Hujun Jiao , Qiang Wang , J. -Q. Liang