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Coherent, self-sustained oscillation of magnetization in spin-torque oscillators (STOs) is a promising source for on-chip, nanoscale generation of microwave magnetic fields. Such fields could be used for local excitation of spin-wave…

介观与纳米尺度物理 · 物理学 2020-07-08 H. Zhang , M. J. H. Ku , F. Casola , C. H. Du , T. van der Sar , M. C. Onbasli , C. A. Ross , Y. Tserkovnyak , A. Yacoby , R. L. Walsworth

Spin waves in insulating magnets are ideal carriers for spin currents with low energy dissipation. An electric field can modify the dispersion of spin waves, by directly affecting, via spin-orbit coupling, the electrons that mediate the…

介观与纳米尺度物理 · 物理学 2015-05-27 Tianyu Liu , G. Vignale

We investigate analytically and numerically the synchronization dynamics of dipolarly coupled vortex based Spin-Torque Nano Oscillators (STNO) with different pillar diameters. We identify the critical interpillar distances on which…

介观与纳米尺度物理 · 物理学 2013-08-20 A. D. Belanovsky , N. Locatelli , P. N. Skirdkov , F. Abreu Araujo , K. A. Zvezdin , J. Grollier , V. Cros , A. K. Zvezdin

We investigate the dynamics of two coupled vortices driven by spin transfer. We are able to independently control with current and perpendicular field, and to detect, the respective chiralities and polarities of the two vortices. For…

材料科学 · 物理学 2015-05-18 N. Locatelli , V. V. Naletov , J. Grollier , G. de Loubens , V. Cros , C. Deranlot , C. Ulysse , G. Faini , O. Klein , A. Fert

We present a comprehensive theoretical and experimental study of voltage-controlled standing spin waves resonance (SSWR) in PMN-PT/NiFe multiferroic heterostructures patterned into microstrips. A spin-diode technique was used to observe…

The interaction between the propagating spin waves and the current driven motion of a transverse domain wall in magnetic nanowires is studied by micromagnetic simulations. If the speed of domain walls due to current induced spin transfer…

材料科学 · 物理学 2011-03-25 Mahdi Jamali , Hyunsoo Yang , Kyung-Jin Lee

The generation, manipulation and detection of spin-polarized electrons in nanostructures define the main challenges of spin-based electronics[1]. Amongst the different approaches for spin generation and manipulation, spin-orbit coupling,…

介观与纳米尺度物理 · 物理学 2009-11-11 Sergio O. Valenzuela , M. Tinkham

We suggest using spatially modulated strain for control of a spin wave propagating inside a bulk magnet. The modulation with the wave vector $q=2k$, by virtue of magnetoelasticity, mixes spin waves with wave vectors near $k$ and $-k$. This…

材料科学 · 物理学 2022-01-11 Ankang Liu , Alexander M. Finkel'stein

We describe a method of controlling the spin wave spectra dynamically in a uniform nanostripe waveguide through spin-polarized currents. A stable periodic magnetization structure is observed when the current flows vertically through the…

材料科学 · 物理学 2015-06-22 Qi Wang , Huaiwu Zhang , Xiaoli Tang , Hans Fangohr , Feiming Bai , Zhiyong Zhong

We investigate the synchronization phenomenon between two Spin-transfer Torque Nano-Oscillators (STNOs) of different frequencies in two pillar systems under vortex configuration detunings or driving frequencies. The oscillators' mutual…

其他凝聚态物理 · 物理学 2022-12-23 A. Hamadeh , A. Koujok , I. Medlej , P. Pirro , S. Petit

This paper introduces a novel oscillator that combines the tunability of spin Hall-driven nano oscillators with the high quality factor (Q) of high overtone bulk acoustic wave resonators (HBAR), integrating both reference and tunable…

介观与纳米尺度物理 · 物理学 2018-01-22 Mustafa Mert Torunbalci , Tanay A. Gosavi , Kerem Y. Camsari , Sunil A. Bhave

Recent studies on spin-wave propagation in ferromagnetic waveguides has highlighted the role of nonreciprocity resulting from the chiral nature of dipolar interactions in curved elements. However, the impact of spin-wave mode type on…

介观与纳米尺度物理 · 物理学 2026-01-21 Uladzislau Makartsou , Mateusz Gołębiewski , Attila Kákay , Olena Tartakivska , Maciej Krawczyk

We address the photonic spin-orbit coupling known from nano-optics and plasmonics in the microwave regime. The spin $\mathbf{S}$ and momentum $\mathbf{q}$ of microwaves emitted by an excited magnetic particle are locked by…

介观与纳米尺度物理 · 物理学 2024-08-13 Chengyuan Cai , Zubiao Zhang , Ji Zou , Gerrit E. W. Bauer , Tao Yu

In the present work, using micromagnetic simulation, we show that the magnetic coupling effect plays a very important role in the process of creation of skyrmions in a coupled system of spin-torque nano-oscillators (STNO). First, we have…

介观与纳米尺度物理 · 物理学 2018-12-13 H. Vigo-Cotrina , A. P. Guimarães

Spin waves have the potential to be used as a new platform for data transfer and processing as they can reach wavelengths in the nanometer range and frequencies in the terahertz range. To realize a spin-wave device, it is essential to be…

Optical heterodyne detection is a powerful technique for characterizing a wide range of physical excitations. Here, we use two types of optical heterodyne detection techniques (fundamental and parametric pumping) to microscopically…

介观与纳米尺度物理 · 物理学 2024-06-04 A. Alemán , A. A. Awad , S. Muralidhar , R. Khymyn , A. Kumar , A. Houshang , D. Hanstorp , J. Åkerman

We propose a new scheme of spin filtering based on nanometric crossjunctions in the presence of Spin Orbit interaction, employing ballistic nanojunctions patterned in a two-dimensional electron gas. We demonstrate that the flow of a…

介观与纳米尺度物理 · 物理学 2009-11-13 S. Bellucci , P. Onorato

We present a simple and fast method to simulate spin-torque driven magnetisation dynamics in nano-pillar spin-valve structures. The approach is based on the coupling between a spin transport code based on random matrix theory and a…

介观与纳米尺度物理 · 物理学 2017-09-27 Simone Borlenghi , M. R. Mahani , Hans Fangohr , Matteo Franchin , Anna Delin , Jonas Fransson

It was shown by micromagnetic simulation that a current-driven in-plane magnetized magnetic nano-contact, besides a quasi-linear propagating ("Slonczewski") spin wave mode, can also support a nonlinear self-localized spin wave "bullet" mode…

材料科学 · 物理学 2009-11-13 G. Consolo , B. Azzerboni , G. Gerhart , G. A. Melkov , V. Tiberkevich , A. N. Slavin

In the absence of an applied magnetic field, a spin-torque nano oscillator(STNO) with a tilted polarizer is studied using numerical simulation of the associated Landau-Lifshitz-Gilbert-Slonczewski equation. We find considerable enhancement…

介观与纳米尺度物理 · 物理学 2020-05-20 R. Arun , 1 R. Gopal , V. K. Chandrasekar , M. Lakshmanan