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Using micromagnetics we demonstrate that the r.f. field produced by a spin valve can be used to reverse the magnetization in a magnetic nanoparticle. The r.f. field is generated using a current that specifically excites a uniform spin wave…

Materials Science · Physics 2009-11-13 K. Rivkin , J. Ketterson , W. Saslow

We demonstrate the use of the magnetic-field-dependence of highly spatially confined, GHz-frequency ferromagnetic resonances in a ferromagnetic nanostructure for the detection of adsorbed magnetic nanoparticles. This is achieved in a large…

In a normally magnetized thin-film ferrite disk with magnetic-dipolar modes, one can observe magnetoelectric oscillations. Such magnetoelectric properties of an electrically small sample can be considered as very attractive phenomena in…

Materials Science · Physics 2008-12-15 E. O. Kamenetskii , M. Sigalov , R. Shavit

A method is advanced allowing for fast regulation of magnetization direction in magnetic nanosystems. The examples of such systems are polarized nanostructures, magnetic nanomolecules, magnetic nanoclusters, magnetic graphene, dipolar and…

Applied Physics · Physics 2022-10-19 V. I. Yukalov , E. P. Yukalova

Magnetic skyrmion is a topologically protected domain-wall structure at nanoscale, which could serve as a basic building block for advanced spintronic devices. Here, we propose a microwave field-driven skyrmionic device with the…

Mesoscale and Nanoscale Physics · Physics 2019-04-18 Jing Xia , Yangqi Huang , Xichao Zhang , Wang Kang , Chentian Zheng , Xiaoxi Liu , Weisheng Zhao , Yan Zhou

Ensembles of nitrogen-vacancy (NV) centers in diamonds are widely utilized for magnetometry, magnetic-field imaging and magnetic-resonance detection. They have not been used for magnetometry at zero ambient field because Zeeman sublevels…

Spin-orbit torque nano-oscillators based on bilayers of ferromagnetic (FM) and nonmagnetic (NM) metals are ultra-compact current-controlled microwave signal sources. They serve as a convenient testbed for studies of spin-orbit torque…

Mesoscale and Nanoscale Physics · Physics 2019-09-02 Jen-Ru Chen , Andrew Smith , Eric A. Montoya , Jia G. Lu , Ilya N. Krivorotov

The transfer of spin angular momentum to a nanomagnet from a spin polarized current provides an efficient means of controlling the magnetization direction in nanomagnets. A unique consequence of this spin torque is that the spontaneous…

Mesoscale and Nanoscale Physics · Physics 2018-07-31 Dinesh Kumar , K. Konishi , Nikhil Kumar , S. Miwa , A. Fukushima , K. Yakushiji , S. Yuasa , H. Kubota , C. V. Tomy , A. Prabhakar , Y. Suzuki , A. Tulapurkar

Nitrogen-vacancy (NV) magnetometry is a new technique for imaging spin waves in magnetic materials. It detects spin waves by their microwave magnetic stray fields, which decay evanescently on the scale of the spin-wavelength. Here, we use…

Mesoscale and Nanoscale Physics · Physics 2022-12-08 Brecht G. Simon , Samer Kurdi , Joris J. Carmiggelt , Michael Borst , Allard Katan , Toeno van der Sar

Recent experiments on strongly coupled microwave and ferromagnetic resonance modes have focused on large volume bulk crystals such as yttrium iron garnet, typically of millimeter-scale dimensions. We extend these experiments to lower…

Mesoscale and Nanoscale Physics · Physics 2019-05-08 Lauren McKenzie-Sell , Junyu Xie , Chang-Min Lee , Jason W. A. Robinson , Chiara Ciccarelli , James A. Haigh

Arrays of spin-torque nano-oscillators are promising for broadband microwave signal detection and processing, as well as for neuromorphic computing. In many of these applications, the oscillators should be engineered to have equally-spaced…

Spin-wave computing, a potential successor to CMOS-based technologies, relies on the efficient manipulation of spin waves for information processing. While basic logic devices like magnon transistors, gates, and adders have been…

Mesoscale and Nanoscale Physics · Physics 2023-11-29 Jan Klíma , Ondřej Wojewoda , Václav Roučka , Tomáš Molnár , Jakub Holobrádek , Michal Urbánek

Single nitrogen-vacancy (NV) centers are widely used as nanoscale sensors for magnetic and electric fields, strain and temperature. Nanoscale magnetometry using NV centers allows for example to quantitatively measure local magnetic fields…

We report on the fabrication of sensitive nanotorsional resonators, which can be utilized as magnetometers for investigating the magnetization dynamics in small magnetic elements. The thermo-mechanical noise is calibrated with the resonator…

Mesoscale and Nanoscale Physics · Physics 2012-03-06 Joseph Losby , Jacob A. J. Burgess , Zhu Diao , David C. Fortin , Wayne K. Hiebert , Mark R. Freeman

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…

We report on propagating spin-wave spectroscopy measurements carried out on coplanar nano-antenna devices made from a Si/SiO$_2$/Ru(5nm)/Co(20)/Pt(5nm) film. The measurements were analyzed in detail by employing newly developed theoretical…

In this study, we present a novel platform based on scanning microwave microscopy for manipulating and detecting tiny vibrations of nanoelectromechanical resonators using a single metallic tip. The tip is placed on the top of a grounded…

This letter studies the dynamical behavior of spin-Hall nanoscillators from a micromagnetic point of view. The model parameters have been identified by reproducing recent experimental data quantitatively. Our results indicate that a…

Mesoscale and Nanoscale Physics · Physics 2015-06-22 A. Giordano , M. Carpentieri , A. Laudani , G. Gubbiotti , B. Azzerboni , G. Finocchio

Mechanical resonators based on low-dimensional materials provide a unique platform for exploring a broad range of physical phenomena. The mechanical vibrational states are indeed extremely sensitive to charges, spins, photons, and adsorbed…

Mesoscale and Nanoscale Physics · Physics 2017-04-05 I. Tsioutsios , A. Tavernarakis , J. Osmond , P. Verlot , A. Bachtold

Integration of magneto-electric and spintronic sensors presents a massive potential for advancing flexible and wearable technology. Magnetic nanowires are core components for building such devices, and therefore it important to realize…

Mesoscale and Nanoscale Physics · Physics 2020-06-19 Giuseppe Muscas , Petra E. Jönsson , I. G. Serrano , Örjan Vallin , M. Venkata Kamalakar