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We show that the spin pumping from ferromagnetic insulator into the adjacent metallic spin sink can be strongly stimulated by the superconducting correlations. The key physical mechanism responsible for this effect is the presence of…

Superconductivity · Physics 2020-11-18 M. A. Silaev

The interface-induced magnetization damping of thin ferromagnetic films in contact with normal-metal layers is calculated from first principles for clean and disordered Fe/Au and Co/Cu interfaces. Interference effects arising from coherent…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 M. Zwierzycki , Y. Tserkovnyak , P. J. Kelly , A. Brataas , G. E. W. Bauer

We study the magnetization dynamics in thin ferromagnetic films and small ferromagnetic particles in contact with paramagnetic conductors. A moving magnetization vector causes \textquotedblleft pumping\textquotedblright of spins into…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Yaroslav Tserkovnyak , Arne Brataas , Gerrit E. W. Bauer

We investigated the spin pumping damping contributed by paramagnetic layers (Pd, Pt) in both direct and indirect contact with ferromagnetic Ni$_{81}$Fe$_{19}$ films. We find a nearly linear dependence of the interface-related Gilbert…

Mesoscale and Nanoscale Physics · Physics 2016-07-19 M. Caminale , A. Ghosh , S. Auffret , U. Ebels , K. Ollefs , F. Wilhelm , A. Rogalev , W. E. Bailey

Spin pumping effect is a sensitive and well-established experimental method in two-dimensional (2D) magnetic materials. We propose that spin pumping effect can be a valuable probe for non-Fermi liquid (NFL) behaviors at the 2D interface of…

Strongly Correlated Electrons · Physics 2025-03-19 Xiao-Tian Zhang , Yi-Hui Xing , Xu-Ping Yao , Yuya Ominato , Long Zhang , Mamoru Matsuo

"Spin pumping" is the injection of spin angular momentum by a time-dependent magnetization into an adjacent normal metal proportional to the spin mixing conductance. We study the role of electrostatic interactions in the form of crystal…

Mesoscale and Nanoscale Physics · Physics 2017-11-01 Adam B. Cahaya , Alejandro O. Leon , Gerrit E. W. Bauer

Using one of the methods of quantum nonequilibrium statistical physics we have investigated the spin transport transverse to the normal metal/ferromagnetic insulator interface in hybrid nanostructures. An approximation of the effective…

Mesoscale and Nanoscale Physics · Physics 2015-06-11 I. I. Lyapilin , M. S. Okorokov , V. V. Ustinov

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

We describe electrical detection of spin pumping in metallic nanostructures. In the spin pumping effect, a precessing ferromagnet attached to a normal-metal acts as a pump of spin-polarized current, giving rise to a spin accumulation. The…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 M. V. Costache , S. M. Watts , C. H. van der Wal , B. J. van Wees

We report measurement of a spin pumping effect due to fluctuations of the magnetic order of IrMn thin films. A precessing NiFe ferromagnet injected spins into IrMn spin sinks, and enhanced damping was observed around the IrMn magnetic phase…

A class of antiferromagnets with spin-polarized electron bands, yet zero net magnetization, called altermagnets is attracting increasing attention due to their potential use in spintronics. Here, we study spin injection into an altermagnet…

Mesoscale and Nanoscale Physics · Physics 2024-02-19 Chi Sun , Jacob Linder

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

In a magnetic multilayer, magnetizations can be manipulated by spin transfer torque. Both spin transfer torque and its reciprocal effect, spin pumping, are governed by spin mixing conductance. The magnitude of spin mixing conductance at the…

Mesoscale and Nanoscale Physics · Physics 2021-12-15 Adam B. Cahaya , Muhammad Aziz Majidi

We have studied ferromagnetic metal/topological insulator bilayer system to understand magnetization dynamics of ferromagnetic metal (FM) in contact with a topological insulator (TI). At magnetic resonance condition, the precessing…

Mesoscale and Nanoscale Physics · Physics 2023-11-27 Sayani Pal , Soumik Aon , Subhadip Manna , Sambhu G Nath , Kanav Sharma , Chiranjib Mitra

The interplay between spin and heat currents at magnetic insulator|nonmagnetic metal interfaces has been a subject of much scrutiny because of both fundamental physics and the promise for technological applications. While ferrimagnetic and,…

Mesoscale and Nanoscale Physics · Physics 2019-06-13 Benedetta Flebus , Yaroslav Tserkovnyak , Gregory A. Fiete

Precessing magnetization in a thin film magnetic insulator pumps spins into adjacent metals; however, this phenomenon is not quantitatively understood. We present a theory for the dependence of spin-pumping on the transverse mode number and…

Mesoscale and Nanoscale Physics · Physics 2013-08-29 André Kapelrud , Arne Brataas

Spin pumping and spin-transfer torques are two reciprocal phenomena widely studied in ferromagnetic materials. However, pumping from antiferromagnets and its relation to current-induced torques have not been explored. By calculating how…

Mesoscale and Nanoscale Physics · Physics 2014-08-04 Ran Cheng , Jiang Xiao , Qian Niu , Arne Brataas

Many proposed and realized spintronic devices involve spin injection and accumulation at an interface between a ferromagnet and a non-magnetic material. We examine the electric field, voltage profile, charge distribution, spin fluxes, and…

Other Condensed Matter · Physics 2015-05-30 M. R. Sears , W. M. Saslow

We study spin pumping into an anisotropic Dirac electron system induced by microwave irradiation to an adjacent ferromagnetic insulator theoretically. We formulate the Gilbert damping enhancement due to the spin current flowing into the…

Mesoscale and Nanoscale Physics · Physics 2022-10-21 Takumi Funato , Takeo Kato , Mamoru Matsuo

The Edelstein effect caused by the pristine surface states of three-dimensional topological insulators is investigated by means of a semiclassical approach. The combined effect of random impurity scattering and the spin-momentum locking of…

Mesoscale and Nanoscale Physics · Physics 2019-07-26 Wei Chen
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