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We experimentally investigate spin-orbit torques and spin pumping in NiFe/Pt bilayers with direct and interrupted interfaces. The damping-like and field-like torques are simultaneously measured with spin-torque ferromagnetic resonance tuned…

Mesoscale and Nanoscale Physics · Physics 2016-02-16 Tianxiang Nan , Satoru Emori , Carl T. Boone , Xinjun Wang , Trevor M. Oxholm , John G. Jones , Brandon M. Howe , Gail J. Brown , Nian X. Sun

In the normal metal/ferromagnetic insulator bilayer (such as Pt/Y$_{3}$Fe$_{5}$O$_{12}$) and the normal metal/ferromagnetic metal/oxide trilayer (such as Pt/Co/AlO$_{x}$) where spin injection and ejection are achieved by the spin Hall…

Mesoscale and Nanoscale Physics · Physics 2015-11-24 Wei Chen , Manfred Sigrist , Jairo Sinova , Dirk Manske

We present an effective Hamiltonian for a bilayer quantum Hall system at filling factor $\nu=1$ neglecting charge fluctuations. Our model is formulated in terms of spin and pseudospin operators and is an exact representation of the system…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Anton Burkov , John Schliemann , A. H. MacDonald , S. M. Girvin

Spin-orbit coupling in semiconductors relates the spin of an electron to its momentum and provides a pathway for electrically initializing and manipulating electron spins for applications in spintronics and spin-based quantum information…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 V. Sih , R. C. Myers , Y. K. Kato , W. H. Lau , A. C. Gossard , D. D. Awschalom

We study the spin relaxation in a single-electron bilayer graphene quantum dot due to the spin-orbit coupling. The spin relaxation is assisted by the emission of acoustic phonons via the bond-length change and deformation potential…

Mesoscale and Nanoscale Physics · Physics 2025-05-21 Lin Wang , Guido Burkard

We present a comprehensive study of broadband spin pumping utilizing the inverse spin Hall effect phenomena in bilayer samples comprising Ni81Fe19 (15 nm) and NbN (with NbN thickness varying from 20 nm to 140 nm), conducted over a…

We consider the magnetic response of a two-dimensional electron gas (2DEG) with a spin-orbit interaction to a long-wave-length electromagnetic excitation. We observe that the transverse electric field creates spin polarization perpendicular…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Alexander Shnirman , Ivar Martin

Spin accumulation and spin current profiles are calculated for a disordered Pt film subjected to an in-plane electric current within the nonequilibrium Green function approach. In the bulklike region of the sample, this approach captures…

Mesoscale and Nanoscale Physics · Physics 2023-10-31 K. D. Belashchenko , G. G. Baez Flores , W. Fang , A. A. Kovalev , M. van Schilfgaarde , P. M. Haney , M. D. Stiles

We propose a novel type of a spin wave computing device, based on a bilayer structure which includes a bias layer, made from a hard magnetic material and a propagation layer, made from a magnetic material with low damping, for example,…

Applied Physics · Physics 2024-06-19 Kirill Rivkin , Michael Montemorra

We investigate the interplay between spin currents and spin waves in nanofabricated Permalloy waveguides with geometrical constrictions. Using propagating spin-wave spectroscopy, micromagnetic simulations, and analytical modeling, we…

We show that in YIG-Pt bi-layers, which are widely used in experiments on the spin transfer torque and spin Hall effects, the spin-wave amplitude significantly decreases in comparison to a single YIG film due to the excitation of microwave…

Mesoscale and Nanoscale Physics · Physics 2023-11-01 Dmytro A. Bozhko , Alexander A. Serga , Milan Agrawal , Burkard Hillebrands , Mikhail P. Kostylev

We study theoretically spin pumping in bilayers consisting of superconductors and antiferromagnetic insulators. We consider both compensated and uncompensated interfaces and include both the regular scattering channel and the Umklapp…

Superconductivity · Physics 2021-04-14 Eirik Holm Fyhn , Jacob Linder

Spin currents offer a way to control static and dynamic magnetic properties, and therefore they are crucial for next-generation MRAM devices or spin-torque oscillators. Manipulating the dynamics is especially interesting within the context…

We employ the non-equilibrium thermodynamics of currents and forces to describe the heat transport caused by a spin current in a Pt/YIG bilayer. By starting from the constitutive equations of the magnetization currents in both Pt and YIG,…

We quantify the relative weight of inverse spin Hall and spin rectification effects occurring in RF-sputtered polycrystalline permalloy, molecular beam epitaxy-grown epitaxial iron and liquid phase epitaxy-grown yttrium-iron-garnet bilayer…

Mesoscale and Nanoscale Physics · Physics 2017-08-02 Sascha Keller , Jochen Greser , Matthias R. Schweizer , Andres Conca , Burkard Hillebrands , E. Th. Papaioannou

Magnonic nano-devices exploit magnons -- quanta of spin waves -- to transmit and process information within a single integrated platform that has the potential to outperform traditional semiconductor-based electronics for low power…

Motivated by a recent experiment[Nature {\bf 442}, 176 (2006)], we present a quantitative microscopic theory to investigate the inverse spin-Hall effect with spin injection into aluminum considering both intrinsic and extrinsic spin-orbit…

Materials Science · Physics 2009-11-11 S. Y. Liu , Norman J. M. Horing , X. L. Lei

We show, both experimentally and theoretically, a novel route to obtain giant room temperature spin Hall effect due to surface-assisted skew scattering. In the experiment, we report the spin Hall effect in Pt-doped Au films with different…

Materials Science · Physics 2015-05-20 B. Gu , I. Sugai , T. Ziman , G. Y. Guo , N. Nagaosa , T. Seki , K. Takanashi , S. Maekawa

We propose a scalable and practical implementation of spin amplification which does not require individual addressing nor a specially tailored spin network. We have demonstrated a gain of 140 in a solid-state nuclear spin system of which…

Quantum Physics · Physics 2015-05-28 Makoto Negoro , Kenichiro Tateishi , Akinori Kagawa , Masahiro Kitagawa

We study theoretically the effective spin Hall properties of a composite consisting of two materials with and without spin-orbit (SO) coupling. In particular, we assume that SO material represents a system of grains in a matrix with no SO.…

Mesoscale and Nanoscale Physics · Physics 2016-02-17 Z. Yue , M. C. Prestgard , A. Tiwari , M. E. Raikh