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The spin-transfer in biased disordered ferromagnet (F) - normal metal (N) systems is calculated by the diffusion equation. For F1-N2-F2 and N1-F1-N2-F2-N3 spin valves, the effect of spin-flip processes in the normal metal and ferromagnet…

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

The spin dynamics and spin relaxation of itinerant electrons in quantum wires with spin-orbit coupling is reviewed. We give an introduction to spin dynamics, and review spin-orbit coupling mechanisms in semiconductors. The spin diffusion…

Mesoscale and Nanoscale Physics · Physics 2010-12-17 Paul Wenk , Stefan Kettemann

We present the analysis of the spin signals obtained in NiFe based metallic lateral spin valves. We exploit the spin dependent diffusive equations in both the conventional 1D analytic modeling as well as in 3D Finite Element Method…

We derive a drift-diffusion equation for spin polarization in semiconductors by consistently taking into account electric-field effects and nondegenerate electron statistics. We identify a high-field diffusive regime which has no analogue…

Materials Science · Physics 2009-11-07 Z. G. Yu , M. E. Flatte

There has been recent controversy about the magnitude of spin-flipping in the heavy metal Pt, characterized by the spin-diffusion length, lsf(Pt) We propose a resolution of this controversy, and also present evidence for the importance of a…

Materials Science · Physics 2013-12-17 Hoang Yen Thi Nguyen , Jack Bass , William P. Pratt

Spins transverse to the magnetization of a ferromagnet only survives over a short distance. We develop a drift-diffusion approach that captures the main features of transverse spin effects in systems with arbitrary spin textures (vortices,…

Mesoscale and Nanoscale Physics · Physics 2013-07-29 Cyril Petitjean , David Luc , Xavier Waintal

We study spin transport through a suspended Cu channel by an electrical non-local 4-terminal measurement for future spin mechanics applications. A magnetoresistance due to spin transport through the suspended Cu channel is observed, and its…

We theoretically study the crossover between spin Hall effect and spin swapping, a recently predicted phenomenon that consists in the interchange between the current flow and its spin polarization directions [Lifshits and Dyakonov, Phys.…

Mesoscale and Nanoscale Physics · Physics 2015-05-15 Hamed Ben Mohamed Saidaoui , Y. Otani , A. Manchon

The concept of anisotropy of spin relaxation in non-magnetic metals with respect to the spin direction of the injected electrons relative to the crystal orientation is introduced. The effect is related to an anisotropy of the Elliott-Yafet…

We study the effect of one-side metallization of a uniform ferromagnetic thin film on its spin-wave dispersion relation in the Damon-Eshbach geometry. Due to the finite conductivity of the metallic cover layer on the ferromagnetic film the…

Mesoscale and Nanoscale Physics · Physics 2015-06-18 M. Mruczkiewicz , M. Krawczyk

We demonstrate the method to calculate the spatial distributions of the spin current and accumulation in the multi-terminal ferromagnetic/nonmagnetic hybrid structure using an approximate electro-transmission line. The analyses based on the…

Materials Science · Physics 2007-05-23 T. Kimura , J. Hamrle , Y. Otani

We show that the electric field-induced thermal asymmetry between the electron and lattice systems in pure silicon substantially impacts the identity of the dominant spin relaxation mechanism. Comparison of empirical results from…

Materials Science · Physics 2012-04-10 Jing Li , Lan Qing , Hanan Dery , Ian Appelbaum

Spin waves propagating in magnetic materials exhibit nonlinear behavior at large amplitudes due to the competition between excitation and relaxation, providing an attractive platform for exploring nonlinear wave dynamics. In particular,…

Spin noise sets fundamental limits to the precision of measurements using spin-polarized atomic vapors, such as performed with sensitive atomic magnetometers. Spin squeezing offers the possibility to extend the measurement precision beyond…

Atomic Physics · Physics 2009-11-13 I. K. Kominis

Spin transport in graphene carries the potential of a long spin diffusion length at room temperature. However, extrinsic relaxation processes limit the current experimental values to 1-2 um. We present Hanle spin precession measurements in…

Mesoscale and Nanoscale Physics · Physics 2009-12-04 C. Jozsa , T. Maassen , M. Popinciuc , P. J. Zomer , A. Veligura , H. T. Jonkman , B. J. van Wees

We obtain explicit expressions for the correlation functions of transmission and reflection coefficients of coherent electronic waves propagating through a disordered quasi-one-dimensional medium with purely elastic diffusive scattering in…

Condensed Matter · Physics 2009-10-22 A. M. S. Macedo

The D'yakonov-Perel' spin relaxation induced by the spin-orbit interaction is examined in disordered two-dimensional electron gas. It is shown that, because of the electron-electron interactions different spin relaxation rates can be…

Disordered Systems and Neural Networks · Physics 2010-11-16 Alexander Punnoose , Alexander M. Finkel'stein

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

Magnetic insulators are promising materials for the development of energy-efficient spintronics. Unlike metallic counterparts, the magnetic insulators are characterized by imaginary part of the interfacial spin mixing conductance as well in…

Mesoscale and Nanoscale Physics · Physics 2020-11-24 Kuntal Roy

We generalize the Elliott-Yafet (EY) theory of spin relaxation in metals with inversion symmetry for the case of large spin-orbit coupling (SOC). The EY theory treats the SOC to the lowest order but this approach breaks down for metals of…

Strongly Correlated Electrons · Physics 2016-05-09 Annamária Kiss , Lénárd Szolnoki , Ferenc Simon