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We present experimental observations of the interference of spin-wave modes propagating in opposite directions in micron-sized NiFe-waveguides. To monitor the local spin-wave intensity distribution and phase of the formed interference…

Mesoscale and Nanoscale Physics · Physics 2015-05-27 Philipp Pirro , Thomas Brächer , Katrin Vogt , Björn Obry , Helmut Schultheiss , Britta Leven , Burkard Hillebrands

Magnetostatic spin wave dispersion and loss are measured in micron scale spin wave-guides in ferromagnetic, metallic CoTaZr. Results are in good agreement with model calculations of spin wave dispersion. The measured attenuation lengths, of…

Materials Science · Physics 2009-11-13 A. Kozhanov , D. Ouellette , M. Rodwell , A. P. Jacob , D. W. Lee , S. X. Wang , S. J. Allen

The spectrum of localized excitations in an anisotropic one-dimensional ferromagnet containing a spin cluster of arbitrary size is found exactly within the framework of the discrete Takeno-Homma model. The boundaries of stability of spin…

Pattern Formation and Solitons · Physics 2020-10-06 O. V. Charkina , M. M. Bogdan

We show by means of micromagnetic simulations that spin polarizer in nano-contact spin torque oscillators (NC-STOs) as the representative of the fixed layer in an orthogonal pseudo-spin valve (P-SV) can be employed to design and to control…

Mesoscale and Nanoscale Physics · Physics 2018-02-12 Morteza Mohseni , Majid Mohseni

We have investigated theoretically band structure of spin waves in magnonic crystals with periodicity in one-(1D), two- (2D) and three-dimensions (3D). We have solved Landau-Lifshitz equation with the use of plane wave method, finite…

Mesoscale and Nanoscale Physics · Physics 2017-03-14 J. Rychly , P. Gruszecki , M. Mruczkiewicz , J. W. Klos , S. Mamica , M. Krawczyk

In this work, the spin wave calculations were carried out using the Heisenberg Hamiltonian to study the allowed spin waves of zigzag and armchair edged stripes for ferromagnetic nanodots arrayed in a 2D honeycomb lattice \cite{Selim2011}.…

Mesoscale and Nanoscale Physics · Physics 2011-10-27 Maher Ahmed

We study theoretically nonlocal spin transport in a ballistic carbon nanotube contacted to two ferromagnetic leads and two normal-metal leads. When the magnetizations of the two ferromagnets are changed from a parallel to an antiparallel…

Mesoscale and Nanoscale Physics · Physics 2009-03-24 Audrey Cottet , Chéryl Feuillet-Palma , Takis Kontos

Spin waves are promising chargeless information carriers for the future, energetically efficient beyond-CMOS systems. Among many advantages there are the ease of achieving nonlinearity, the variety of possible interactions, and excitation…

Mesoscale and Nanoscale Physics · Physics 2022-03-22 Pawel Gruszecki , Konstantin Y. Guslienko , Igor L. Lyubchanskii , Maciej Krawczyk

The research feld of magnonics proposes a low-energy wave-logic computation technology based on spin waves to complement the established CMOS technology and provide a basis for emerging unconventional computation architectures. However,…

Correlated-electron systems support a wealth of magnetic excitations, ranging from conventional spin waves to exotic fractional excitations in low-dimensional or geometrically-frustrated spin systems. Probing such excitations on nanometre…

Mesoscale and Nanoscale Physics · Physics 2015-08-12 Toeno van der Sar , Francesco Casola , Ronald Walsworth , Amir Yacoby

Optical microresonators have proven powerful in a wide range of applications, including cavity quantum electrodynamics, biosensing, microfludics, and cavity optomechanics. Their performance depends critically on the exact distribution of…

A parametrized spin model was recently introduced and intended for one-dimensional ferromagnets with a deformable Zeeman energy. This model is revisited and given more realistic interpretation in terms of a model for ferromagnetic systems…

Pattern Formation and Solitons · Physics 2007-05-23 Alain M. Dikande , J. P. Nguenang

The formation of quasi-2D nonlinear spin-wave eigenmodes in longitudinally magnetized stripes of a ferrimagnetic film, so-called guided spin-wave bullets, was experimentally observed by using time- and space-resolved Brillouin light…

Other Condensed Matter · Physics 2009-03-04 A. A. Serga , M. P. Kostylev , B. Hillebrands

Time-resolved pump-probe soft X-ray ptychography and Scanning Transmission X-ray Microscopy (STXM) were employed to study the magnetic domain wall dynamics in microstructures of permalloy (Ni$_{81}$Fe$_{19}$; Py) with a weak growth-induced…

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…

Mesoscale and Nanoscale Physics · Physics 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

By driving with a microwave pulse the lowest frequency antiferromagnetic resonance of the quasi 1-D biaxial antiferromagnet (C_2 H_5 NH_3)_2 CuCl_4 into an unstable region intrinsic localized spin waves have been generated and detected in…

chao-dyn · Physics 2009-10-31 U. T. Schwarz , L. Q. English , A. J. Sievers

Nanoscale magnetic resonance imaging (nanoMRI) aims at obtaining structure at the single molecule level. Most of the techniques for effecting a nanoMRI gradient use small permanent magnets. Here, we present a switchable magnetic field…

Mesoscale and Nanoscale Physics · Physics 2025-03-12 Leora Schein-Lubomirsky , Yarden Mazor , Rainer Stöhr , Andrej Denisenko , Amit Finkler

On-chip optoelectronic and all-optical information processing paradigms require compact implementation of signal transfer for which nanoscale surface plasmons circuitry offers relevant solutions. This work demonstrates the directional…

The intense interest in spin-based quantum information processing has caused an increasing overlap between two traditionally distinct disciplines, such as magnetic resonance and nanotechnology. In this work we discuss rigourous design…

Mesoscale and Nanoscale Physics · Physics 2013-01-24 J. P. Dehollain , J. J. Pla , E. Siew , K. Y. Tan , A. S. Dzurak , A. Morello

We present a micromagnetic study of linear and nonlinear spin-wave modes excited in an extended permalloy thin film by a microwave driven nanocontact. We show that the linear mode having the frequency equal to the excitation frequency (f)…

Mesoscale and Nanoscale Physics · Physics 2015-05-28 Florin Ciubotaru , Alexander A. Serga , Luis Lopez Diaz , Britta Leven , Burkard Hillebrands
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