Spin-Wave Amplification and Lasing Driven by Inhomogeneous Spin-Transfer Torques
نویسندگان
چکیده
منابع مشابه
Spin Transfer Torques
This tutorial article introduces the physics of spin transfer torques in magnetic devices. We provide an elementary discussion of the mechanism of spin transfer torque, and review the theoretical and experimental progress in this field. Our intention is to be accessible to beginning graduate students. This is the introductory paper for a cluster of “Current Perspectives” articles on spin transf...
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Spin torque from spin current applied to a nanoscale region of a ferromagnet can act as negative magnetic damping and thereby excite self-oscillations of its magnetization. In contrast, spin torque uniformly applied to the magnetization of an extended ferromagnetic film does not generate self-oscillatory magnetic dynamics but leads to reduction of the saturation magnetization. Here we report st...
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J. Cucchiara,1 S. Le Gall,1 E. E. Fullerton,2 J.-V. Kim,3 D. Ravelosona,3 Y. Henry,4 J. A. Katine,5 A. D. Kent,6 D. Bedau,6 D. Gopman,6 and S. Mangin1 1Institut Jean Lamour, Université de Lorraine UMR CNRS 7198, Vandoeuvre lès Nancy, France 2Center for Magnetic Recording Research, University of California San Diego, La Jolla, California 92093-0401, USA 3Institut d’Electronique Fondamentale, UMR...
متن کاملCurrent Perspectives Spin transfer torques
This tutorial article introduces the physics of spin transfer torques in magnetic devices. Our intention is that it be accessible to beginning graduate students. We provide an elementary discussion of the mechanism of spin transfer torque and review the theoretical and experimental progress in this field. This article is meant to set the stage for the articles which follow in this volume of the...
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Spin pumping and spin-transfer torques are key elements of coupled dynamics of magnetization and conduction electron spin, which have been widely studied in various ferromagnetic materials. Recent progress in spintronics suggests that a spin current can significantly affects the behavior of an antiferromagnetic material [1], and the electron motion become adiabatic when the staggered field vari...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2019
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.122.037203