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The spin Hall effect (SHE) generates spin currents within nonmagnetic materials. Previously, studies of the SHE have been motivated primarily to understand its fundamental origin and magnitude. Here we demonstrate, using measurement and…

Materials Science · Physics 2013-05-30 Luqiao Liu , O. J. Lee , T. J. Gudmundsen , D. C. Ralph , R. A. Buhrman

Magnetization switching due to a current-pulse in symmetric and asymmetric spin valves is studied theoretically within the macrospin model. The switching process and the corresponding switching parameters are shown to depend significantly…

Mesoscale and Nanoscale Physics · Physics 2010-04-12 Pavel Balaz , Martin Gmitra , Jozef Barnas

The ability to switch magnetic elements by spin-orbit-induced torques has recently attracted much attention for a path towards high-performance, non-volatile memories with low power consumption. Realizing efficient spin-orbit-based…

Materials Science · Physics 2020-07-01 Shiheng Liang , Shuyuan Shi , Chuang-Han Hsu , Kaiming Cai , Yi Wang , Pan He , Yang Wu , Vitor M. Pereira , Hyunsoo Yang

Electric-field control of magnetization dynamics is fundamentally and technologically important for future spintronic devices. Here, based on electric-field control of both magnetic anisotropy and spin--orbit torque, two distinct methods…

Materials Science · Physics 2020-09-15 Takahiro Chiba , Takashi Komine

The common feature of nearly all logic and memory devices is that they make use of stable units to represent 0's and 1's. A completely different paradigm is based on three-terminal stochastic units which could be called "p-bits", where the…

Emerging Technologies · Computer Science 2017-09-14 Ahmed Zeeshan Pervaiz , Lakshmi Anirudh Ghantasala , Kerem Yunus Camsari , Supriyo Datta

We show how the interference between superfluid spin currents can endow spin circuits with coherent logic functionality. While the hydrodynamic aspects of the linear-response collective spin transport obviate interference features, we focus…

Mesoscale and Nanoscale Physics · Physics 2017-11-08 Yaroslav Tserkovnyak , Mathias Klaeui

Voltage-driven spin transfer torques in magnetic tunnel junctions provide an outstanding tool to design advanced spin-based devices for memory and reprogrammable logic applications. The non-linear voltage dependence of the torque has a…

Mesoscale and Nanoscale Physics · Physics 2015-06-05 A. Manchon

Spin-dependent transport through an endohedral fullerene Co@C$_{60}$ dimer with gold electrodes is explored theoretically using density functional and extended H\"{u}ckel theory. Density of states spin polarizations up to 95%, due to…

Mesoscale and Nanoscale Physics · Physics 2013-05-01 Alireza Saffarzadeh , George Kirczenow

We explore theoretically the spin transport in nanostructures consisting of a gold quantum dot bridging nonmagnetic electrodes and two Mn12-Ph single molecule magnets (SMMs) that are thiol-bonded to the dot but are not in direct contact…

Mesoscale and Nanoscale Physics · Physics 2015-06-15 Fatemeh Rostamzadeh Renani , George Kirczenow

To bring Spin Wave (SW) based computing paradigm into practice and develop ultra low power Magnonic circuits and computation platforms, one needs basic logic gates that operate and can be cascaded within the SW domain without requiring back…

Mesoscale and Nanoscale Physics · Physics 2021-06-22 Abdulqader Mahmoud , Frederic Vanderveken , Christoph Adelmann , Florin Ciubotaru , Said Hamdioui , Sorin Cotofana

The recently proposed probabilistic spin logic presents promising solutions to novel computing applications. Multiple cases of implementations, including invertible logic gate, have been studied numerically by simulations. Here we report an…

Emerging Technologies · Computer Science 2019-12-06 Yang Lv , Robert P. Bloom , Jian-Ping Wang

Spin-transfer torque magnetoresistive random access memory is a potentially transformative technology in the non-volatile memory market. Its viability depends, in part, on one's ability to predictably induce or prevent switching; however,…

Mesoscale and Nanoscale Physics · Physics 2019-10-02 YiMing Yu , Cyrill B. Muratov , Richard O. Moore

We have proposed a method to synchronize multiple spin-transfer torque oscillators based on spin pumping, inverse spin Hall, and spin Hall effects. The proposed oscillator system consists of a series of nano-magnets in junction with a…

Mesoscale and Nanoscale Physics · Physics 2015-06-04 Mehrdad Elyasi , Charanjit S. Bhatia , Hyunsoo Yang

Spin-orbit torques enable energy-efficient manipulation of magnetization by electric current and hold promise for applications ranging from nonvolatile memory to neuromorphic computing. Here we report the discovery of a giant spin-orbit…

Mesoscale and Nanoscale Physics · Physics 2024-01-11 Eric Arturo Montoya , Xinyao Pei , Ilya N. Krivorotov

Spin is an intrinsically quantum property, characterized by angular momentum. A change in the spin state is equivalent to a change in the angular momentum or mechanical torque. This spin-induced torque has been invoked as the intrinsic…

Mesoscale and Nanoscale Physics · Physics 2009-09-30 Guiti Zolfagharkhani , Alexei Gaidarzhy , Pascal Degiovanni , Stefan Kettemann , Peter Fulde , Pritiraj Mohanty

The current generation of spintronic devices, which use electron-spin relies on linear operations for spin-injection, transport and detection processes. The existence of nonlinearity in a spintronic device is indispensable for spin-based…

Mesoscale and Nanoscale Physics · Physics 2021-01-04 S. Omar , M. Gurram , K. Watanabe , T. Taniguchi , M. H. D. Guimarães , B. J. van Wees

In a nanopillar with dipolarly coupled vortices, we present an experimental and simulation study to understand how the interplay between the bias field and spin transfer torque impacts reversal of the vortex cores. We find that, depending…

Mesoscale and Nanoscale Physics · Physics 2015-06-12 N. Locatelli , A. E. Ekomasov , A. V. Khvalkovskiy , Sh. A. Azamatov , K. A. Zvezdin , J. Grollier , E. G. Ekomasov , V. Cros

We investigate theoretically the prospects for using a magnetic nanoelectromechanical single-electron tunneling (NEM-SET) device as an electronic spin filter. We find that strong magnetic exchange forces on the net spin of the mobile…

Mesoscale and Nanoscale Physics · Physics 2012-09-25 Robert I. Shekhter , Artem Pulkin , Mats Jonson

Recent advances in manipulating single electron spins in quantum dots have brought us close to the realization of classical logic gates based on representing binary bits in spin polarizations of single electrons. Here, we show that a linear…

Mesoscale and Nanoscale Physics · Physics 2008-01-28 H. Agarwal , S. Pramanik , S. Bandyopadhyay

Spin-Hall oscillators are promising sources of spin-wave signals for magnonics applications, and can serve as building blocks for magnonic logic in ultralow power computation devices. Here, we analytically and micromagnetically study…