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We investigate spin transport through ferromagnetic graphene vertical heterostructures where a sandwiched tunneling layer is either a normal or ferroelectric insulator. We show that the spin-polarization of the tunneling current is…

介观与纳米尺度物理 · 物理学 2016-05-31 Nojoon Myoung , Hee Chul Park , Seung Joo Lee

We investigate the enhancement of Gilbert damping at 2DHG/ferromagnetic insulator (FI) interfaces, where spin pumping from the FI layer injects spins into the 2DHG, and cubic Rashba spin-orbit coupling (RSOC) significantly boosts spin…

介观与纳米尺度物理 · 物理学 2025-02-18 Sushmita Saha , Alestin Mawrie

The richness in both the dispersion and energy of antiferromagnetic magnons has spurred the magnetism community to consider antiferromagnets for future spintronic/magnonic applications. However, the excitation and control of…

We investigate electron spin relaxation in GaAs in the proximity of a Fe/MgO layer using spin-resolved optical pump-probe spectroscopy, revealing a strong dependence of the spin relaxation time on the strength of an exchange-driven…

Yttrium iron garnet (YIG) magnonics has garnered significant research interest because of the unique properties of magnons (quasiparticles of collective spin excitation) for signal processing. In particular, hybrid systems based on YIG…

介观与纳米尺度物理 · 物理学 2024-12-20 Jing Xu , Connor Horn , Yu Jiang , Amin Pishehvar , Xinhao Li , Daniel Rosenmann , Xu Han , Miguel Levy , Supratik Guha , Xufeng Zhang

Thermoelectric effects in spintronics are gathering increasing attention as a means of managing heat in nanoscale structures and of controlling spin information by using heat flow. Thermal magnons (spin-wave quanta) are expected to play a…

材料科学 · 物理学 2012-03-27 Marius V. Costache , German Bridoux , Ingmar Neumann , Sergio O. Valenzuela

Collinear antiferromagnets (AFs) support two degenerate magnon excitations carrying opposite spin polarizations, by which magnons can function as electrons in various spin-related phenomena. In an insulating ferromagnet(F)/AF/F trilayer, we…

介观与纳米尺度物理 · 物理学 2018-11-21 Ran Cheng , Di Xiao , Jian-Gang Zhu

Carrier-induced ferromagnetism is investigated in a diluted ferromagnetic Kondo lattice model for several ordered impurity arrangements on square and cubic lattices, allowing for quantitative comparison with different theoretical pictures.…

强关联电子 · 物理学 2007-05-23 Subrat Kumar Das , Avinash Singh

Magnons are the energy quanta of fundamental spin excitations, namely spin waves, and they can make a considerable contribution to energy transport in some magnetic materials in a similar manner as lattice vibration waves or phonons. The…

We investigate thermomagnetic transport in an ultracold atomic system with two ferromagnets linked via a magnetic quantum point contact. Using nonequilibrium Green's function approach, we show a divergence in spin conductance and a slowing…

量子气体 · 物理学 2024-10-18 Yuta Sekino , Yuya Ominato , Hiroyuki Tajima , Shun Uchino , Mamoru Matsuo

The magnetic insulator Yttrium Iron Garnet can be grown with exceptional quality, has a ferrimagnetic transition temperature of nearly 600 K, and is used in microwave and spintronic devices that can operate at room temperature. The most…

强关联电子 · 物理学 2018-02-15 A. J. Princep , R. A. Ewings , S. Ward , S. Tóth , C. Dubs , D. Prabhakaran , A. T. Boothroyd

We investigate the coupling of spin and thermal currents as a means to rise the thermoelectric efficiency of nanoscale graphene devices. We consider nanostructures composed of overlapping graphene nanoribbons with ferromagnetic contacts in…

介观与纳米尺度物理 · 物理学 2017-11-22 Leonor Chico , P. A. Orellana , L. Rosales , M. Pacheco

We study a bilayer structure consisting of an antiferromagnetic insulator and a normal metal. An electron current is driven in the normal metal with direction parallel to the interface between the materials. Due to interfacial exchange…

介观与纳米尺度物理 · 物理学 2022-06-01 Eirik Erlandsen , Asle Sudbø

Turbulence induced by the ion temperature gradient (ITG) is investigated in the helical and axisymmetric plasma states of a reversed field pinch device by means of gyrokinetic calculations. The two magnetic configurations are systematically…

等离子体物理 · 物理学 2015-06-11 I. Predebon , P. Xanthopoulos

The Stern-Gerlach (SG) effect is well known as the spin-dependent splitting of a beam of atoms carrying magnetic moments by a magnetic-field gradient, leading to the concept of electron spin. Antiferromagnets can accommodate two magnon…

介观与纳米尺度物理 · 物理学 2022-07-01 Zhenyu Wang , Weiwei Bao , Yunshan Cao , Peng Yan

Compensated ferrimagnets, like antiferromagnets, show no net magnetization but their transport and magneto-optic properties resemble those of ferromagnets, thereby creating opportunities for applications in high-frequency spintronics and…

材料科学 · 物理学 2022-10-26 Rui Zhang , Yangkun He , Daniel Fruchart , J. M. D. Coey , Zsolt Gercsi

In this paper we theoretically discuss thermal Hall effect of magnons in insulating N\'{e}el ordered antiferromagnets at zero external magnetic field. We show that for compensated N\'{e}el order the non-zero thermal Hall effect will occur…

介观与纳米尺度物理 · 物理学 2026-03-12 Vladimir A. Zyuzin

This review provides a comprehensive study of the nonlinear transport properties of magnons, which are electrically emitted or absorbed inside extended YIG films by spin transfer effects via a YIG$\vert$Pt interface. Our purpose is to…

We report the structural, magnetic, and interfacial spin transport properties of epitaxial terbium iron garnet (TbIG) ultrathin films deposited by magnetron sputtering. High crystallinity was achieved by growing the films on gadolinium…

材料科学 · 物理学 2023-02-22 Silvia Damerio , Can Onur Avci

Based on the solution of the stochastic Landau-Lifshitz-Gilbert equation discretized for a ferromagnetic chain subject to a uniform temperature gradient, we present a detailed numerical study of the spin dynamics with a focus particularly…

材料科学 · 物理学 2014-07-15 S. R. Etesami , L. Chotorlishvili , A. Sukhov , J. Berakdar
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