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We demonstrate spin pumping, i.e. the generation of a pure spin current by precessing magnetization, without application of microwave radiation commonly used in spin pumping experiments. We use femtosecond laser pulses to simultaneously…

Spin transport in magnetic tunnel junctions in the presence of spin diffusion is considered theoretically. Combining ballistic tunneling across the barrier and diffusive transport in the electrodes, we solve the spin dynamics equation in…

介观与纳米尺度物理 · 物理学 2015-06-04 A Manchon , R. Matsumoto , H. Jaffres , J. Grollier

We present a novel method that combines spin resonance spectroscopy with transmission electron microscopy (TEM), enabling localized in-situ detection of microwave (MW)-driven spin excitations. Our approach utilizes continuous wave MW…

In this paper, based on the holographic techniques, we explore the hydrodynamics of charge diffusion phenomena in non commutative $ \mathcal{N}=4 $ SYM plasma at strong coupling. In our analysis, we compute the $ R $ charge diffusion rates…

高能物理 - 理论 · 物理学 2015-07-23 Dibakar Roychowdhury

We analytically study a system of spinless fermions driven at the boundary with an oscillating chemical potential. Various transport regimes can be observed: at zero driving frequency the particle current through the system is independent…

量子物理 · 物理学 2011-11-22 Marko Znidaric , Bojan Zunkovic , Tomaz Prosen

We study effects of the shape of a two-dimensional waveguide on the spin-dependent electron transport in the presence of spin-orbit coupling. The transition from classical motion to the tunneling regime can be controlled there by modulating…

介观与纳米尺度物理 · 物理学 2012-02-03 Yue Ban , E. Ya. Sherman

This Letter presents a theoretical analysis of propagation of spin waves in a superconducting ferromagnet. The surface impedance was calculated for the case when the magnetization is normal to the sample surface. We found the frequencies at…

凝聚态物理 · 物理学 2009-11-10 V. Braude , E. B. Sonin

Nonreciprocal wave propagation allows for directional energy transport. In this work, we systematically investigate wave dynamics in an elastic lattice that combines nonreciprocal stiffness with viscous damping. After establishing how…

应用物理 · 物理学 2026-02-03 Harshit Kumar Sandhu , Saurav Dutta , Rajesh Chaunsali

Oblique propagation of the spin-electron acoustic waves in degenerate magnetized plasmas is considered in terms of quantum kinetics with the separate spin evolution, where the spin-up electrons and the spin-down electrons are considered as…

等离子体物理 · 物理学 2018-04-18 Pavel A. Andreev

A nonlinear model of spin wave excitation using a point contact in a thin ferromagnetic film is introduced. Large-amplitude magnetic solitary waves are computed, which help explain recent spin-torque experiments. Numerical simulations of…

其他凝聚态物理 · 物理学 2009-11-11 M. A. Hoefer , M. J. Ablowitz , B. Ilan , M. R. Pufall , T. J. Silva

The excitation of high-frequency short-wavelength spin waves is a challenge limiting the application of these propagating magnetization disturbances in information processing systems. We propose a method of local excitation of the…

介观与纳米尺度物理 · 物理学 2021-06-22 Pawel Gruszecki , Igor L. Lyubchanskii , Konstantin Y. Guslienko , Maciej Krawczyk

The motion of energetic particles in magnetic turbulence across a mean magnetic field is explored analytically. The approach presented here allows for a full time-dependent description of the transport, including compound sub-diffusion. The…

等离子体物理 · 物理学 2017-05-24 Andreas Shalchi

Spin waves, the collective excitations of the magnetic order parameter, and magnons, the associated quasiparticles, are envisioned as possible data carriers in future wave-based computing architectures. On the road towards spin-wave…

Here we show a direct mapping between waveguide theory and spin chain transport, opening an alternative approach to quantum information transport in the solid-state. By applying temporally varying control profiles to a spin chain, we design…

量子物理 · 物理学 2015-05-30 Melissa I. Makin , Jared H. Cole , Charles D. Hill , Andrew D. Greentree

Evolution of the z-component of a single spin in the finite cyclic XY spin 1/2 chain is studied. Initially one selected spin is polarized while other spins are completely unpolarized and uncorrelated. Polarization of the selected spin as a…

量子物理 · 物理学 2013-04-17 Evgeniy Safonov , Oleg Lychkovskiy

Spin wave, the collective excitation of magnetic order, is one of the fundamental angular momentum carriers in magnetic systems. Understanding the spin wave propagation in magnetic textures lies in the heart of developing pure magnetic…

材料科学 · 物理学 2021-06-09 Jin Lan , Weichao Yu , Jiang Xiao

We show that the propagation of spin polarized carriers may be dramatically affected by {\em inhomogeneous} electric fields. Surprisingly, the spin diffusion length is found to strongly depend on the sign and magnitude of electric field…

材料科学 · 物理学 2009-11-11 Dan Csontos , Sergio E. Ulloa

Spin accumulation and spin precession in single-layer graphene are studied by non-local spin valve measurements at room temperature. The dependence of the non-local magnetoresistance on electrode spacing is investigated and the results…

介观与纳米尺度物理 · 物理学 2010-01-20 Wei Han , K. Pi , W. Bao , K. M. McCreary , Yan Li , W. H. Wang , C. N. Lau , R. K. Kawakami

We address the propagation of the spin along classical trajectories for a 1/2-spin particle obeying the Dirac equation with scalar potentials. Focusing on classical trajectories as the exact propagation of wave-function discontinuities we…

量子物理 · 物理学 2014-12-24 Jesús Rubio , Alfredo Luis

This article discusses spin transport in systems with spin-orbit interactions and how it can be understood in a semiclassical picture. I will first present a semiclassical wave-packet description of spin transport, which explains how the…

介观与纳米尺度物理 · 物理学 2009-04-15 Dimitrie Culcer