Giant room temperature interface spin hall and inverse spin hall effects
TLDR
By decomposing the room temperature SHE and inverse SHE currents into bulk and interface terms, this work discovers a giant interface SHA that dominates the total inverse SHE current with potentially major consequences for applications.Abstract:
The spin Hall angle (SHA) is a measure of the efficiency with which a transverse spin current is generated from a charge current by the spin-orbit coupling and disorder in the spin Hall effect (SHE). In a study of the SHE for a Pt|Py (Py=Ni 80 Fe 20 ) bilayer using a first-principles scattering approach, we find a SHA that increases monotonically with temperature and is proportional to the resistivity for bulk Pt. By decomposing the room temperature SHE and inverse SHE currents into bulk and interface terms, we discover a giant interface SHA that dominates the total inverse SHE current with potentially major consequences for applications.read more
Citations
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Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
Aurelien Manchon,J. Železný,Ioan Mihai Miron,Tomas Jungwirth,Jairo Sinova,André Thiaville,Kevin Garello,Pietro Gambardella +7 more
TL;DR: In this paper, the authors acknowledge support from the EU FET Open RIA Grant No 766566, the Ministry of Education of the Czech Republic Grant No LM2015087 and LNSM-LNSpin.
Journal ArticleDOI
Direct visualization of current-induced spin accumulation in topological insulators.
Yang Liu,Jean Besbas,Yi Wang,Pan He,Mengji Chen,Dapeng Zhu,Yang Wu,Jong Min Lee,Lan Wang,Jisoo Moon,Nikesh Koirala,Seongshik Oh,Hyunsoo Yang +12 more
TL;DR: Spatial imaging of current-induced spin accumulation at the edges of Bi2Se3 and BiSbTeSe2 topological insulators as well as Pt by a scanning photovoltage microscope at room temperature points towards a better understanding of the interaction between spins and circularly polarized light.
Journal ArticleDOI
Spin currents and spin-orbit torques in ferromagnetic trilayers
Seung-heon Chris Baek,Vivek Amin,Vivek Amin,Young Wan Oh,Gyungchoon Go,Seung Jae Lee,Geunhee Lee,Kab-Jin Kim,Mark D. Stiles,Byong-Guk Park,Kyoung J. Lee +10 more
TL;DR: This work demonstrates field-free switching in ferromagnetic trilayers and describes a mechanism for spin-current generation at the interface between the bottom layer and the spacer layer, which gives torques that are consistent with the measured magnetization dependence.
Journal ArticleDOI
Spatially and time-resolved magnetization dynamics driven by spin-orbit torques.
Manuel Baumgartner,Kevin Garello,Kevin Garello,Johannes Mendil,Can Onur Avci,Eva Grimaldi,Christoph Murer,Junxiao Feng,Mihai Gabureac,Christian Stamm,Yves Acremann,Simone Finizio,Sebastian Wintz,Jörg Raabe,Pietro Gambardella +14 more
TL;DR: The authors' measurements reveal how the magnetic symmetry is broken by the concerted action of the damping-like and field-like spin-orbit torques and the Dzyaloshinskii-Moriya interaction, and show that reproducible switching events can be obtained for over 1012 reversal cycles.
Journal ArticleDOI
Interface-Generated Spin Currents.
TL;DR: Transport calculations based on ab initio band structures reveal large interface-generated spin currents at Co/Pt, Co/Cu, and Pt/Cu interfaces, providing a novel mechanism for generating spin torques in magnetic trilayers.
References
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Journal ArticleDOI
Spin-torque switching with the giant spin hall effect of tantalum
TL;DR: In this paper, a giant spin Hall effect (SHE) in β-tantalum was shown to generate spin currents intense enough to induce spin-torque switching of ferromagnets at room temperature.
Journal ArticleDOI
Spin Hall Effect
TL;DR: In this paper, it is proposed that when a charge current circulates in a paramagnetic metal, a transverse spin imbalance will be generated, giving rise to a spin Hall voltage, in the absence of charge current and magnetic field.
Journal ArticleDOI
Spin Hall effects
TL;DR: In solid-state materials with strong relativistic spin-orbit coupling, charge currents generate transverse spin currents as discussed by the authors and the associated spin Hall and inverse spin Hall effects distinguish between charge and spin current where electron charge is a conserved quantity but its spin direction is not.
Journal ArticleDOI
Conversion of spin current into charge current at room temperature: Inverse spin-Hall effect
TL;DR: In this article, a pure spin current was injected into a Pt thin film using spin pumping, and it was observed to generate electromotive force transverse to the spin current, consistent with the spin-Hall effect.
Spin Hall Effect
TL;DR: In this article, it is proposed that when a charge current circulates in a paramagnetic metal, a transverse spin imbalance will be generated, giving rise to a spin Hall voltage, in the absence of charge current and magnetic field.