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We have theoretically studied how resonant spin wave modes in an elliptical nanomagnet are affected by fabrication defects, such as small local thickness variations. Our results indicate that defects of this nature, which can easily result…

介观与纳米尺度物理 · 物理学 2020-03-10 Md Ahsanul Abeed , Sourav Sahoo , David Winters , Anjan Barman , Supriyo Bandyopadhyay

We use the phase-resolved imaging to directly study the nonlinear modification of the wavelength of spin waves propagating in 100-nm thick, in-plane magnetized YIG waveguides. We show that, by using moderate microwave powers, one can…

介观与纳米尺度物理 · 物理学 2022-03-09 S. R. Lake , B. Divinskiy , G. Schmidt , S. O. Demokritov , V. E. Demidov

We have studied the dependence of spin wave dispersion on the characteristics of the mesh used in a finite element micromagnetic simulation. It is shown that the dispersion curve has a cut off at a frequency which is analytically…

计算物理 · 物理学 2014-05-27 G. Venkat , M. Franchin , H. Fangohr , A. Prabhakar

We study collective spin excitations in two-dimensional diluted magnetic semiconductors, placed into external magnetic field. Two coupled modes of the spin waves (the electron and ion modes) are found to exist in the system along with a…

介观与纳米尺度物理 · 物理学 2015-05-19 P. M. Shmakov , A. P. Dmitriev , V. Yu. Kachorovskii

We study the mechanism of wrinkling of suspended graphene, by means of atomistic simulations. We argue that the structural instability under edge compression is the essential physical reason for the formation of periodic ripples in…

材料科学 · 物理学 2015-05-27 Zhao Wang , Michel Devel

In this letter, we present experimental data demonstrating spin wave interference detection using spin Hall effect (ISHE). Two coherent spin waves are excited in a yttrium-iron garnet (YIG) waveguide by continuous microwave signals. The…

介观与纳米尺度物理 · 物理学 2024-06-19 Michael Balynskiy , Howard Chiang , David Gutierrez , Alexander Khitun

The mode dependence of current-induced magnetic excitations in spin valves is studied theoretically. The torque exerted on the magnetization by transverse spin currents as well as the Gilbert damping constant are found to depend strongly on…

介观与纳米尺度物理 · 物理学 2009-11-11 Arne Brataas , Yaroslav Tserkovnyak , Gerrit E. W. Bauer

We report on the propagation of spin waves in permalloy microstripes. By means of scanning Kerr microscopy combined with continuous microwave excitation, we detect the time evolution of spin-wave interference patterns in an external…

介观与纳米尺度物理 · 物理学 2009-05-14 Andreas Krohn , Sebastian Mansfeld , Jan Podbielski , Jesco Topp , Wolfgang Hansen , Detlef Heitmann , Stefan Mendach

We develop a self-consistent theory for current-induced spin wave excitations in normal metal-magnetic insulator bilayer systems, thereby establishing the relation between spin wave excitation and the experimentally controlled parameters.…

介观与纳米尺度物理 · 物理学 2015-06-16 Yan Zhou , Hu-jun Jiao , Yan-ting Chen , Gerrit E. W. Bauer , Jiang Xiao

A general theory of edge spin wave excitations in semi-infinite and finite periodic arrays of magnetic nanodots existing in a spatially uniform magnetization ground state is developed. The theory is formulated using a formalism of…

介观与纳米尺度物理 · 物理学 2016-07-06 Ivan Lisenkov , Vasyl Tyberkevych , Sergey Nikitov , Andrei Slavin

We present a general study of the magnetic excitations within a weak-coupling five-orbital model relevant to itinerant iron pnictides. As a function of enhanced electronic correlations, the spin excitations in the symmetry broken…

超导电性 · 物理学 2015-03-10 M. Kovacic , M. H. Christensen , M. N. Gastiasoro , B. M. Andersen

Recent experiments demonstrate that spin dynamics may acquire an inertial effect in a few metallic magnets, deviating from the traditional inertia-free dynamics. It remains an open question to ascertain the physical mechanisms and…

介观与纳米尺度物理 · 物理学 2025-12-09 H. Y. Yuan

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…

介观与纳米尺度物理 · 物理学 2022-03-22 Pawel Gruszecki , Konstantin Y. Guslienko , Igor L. Lyubchanskii , Maciej Krawczyk

This paper investigates the formation of Spin Faraday waves in spin-orbit-coupled Bose-Einstein condensate under the stripe phase and explores the dispersion relation under three different phases. We discover that the SFW exhibit temporal…

量子气体 · 物理学 2025-12-17 Hongguang Liang , Meiling Wang , Juan Wang , Yan Li

Rigorous coupled spin-charge drift-diffusion equations are derived from quantum-kinetic equations for the spin-density matrix that incorporate effects due to k-linear spin-orbit interaction, an in-plane electric field, and the elastic…

材料科学 · 物理学 2009-11-13 P. Kleinert , V. V. Bryksin

We theoretically study the effect of exchange interaction on the non-equilibrium spin waves in disordered paramagnetic metals under the spin injection condition. We show that the gapless spectrum of spin waves, describing the spin…

介观与纳米尺度物理 · 物理学 2010-07-29 A. A. Zyuzin , A. Yu. Zyuzin

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…

其他凝聚态物理 · 物理学 2009-03-04 A. A. Serga , M. P. Kostylev , B. Hillebrands

Spin waves are propagating disturbances in the magnetization of magnetic materials. One of their interesting properties is the nonreciprocity, exhibiting that their amplitude depends on the magnetization direction. Nonreciprocity in spin…

Using a spin-only model, we compute spin excitation spectra in a bond-centered stripe state with long-range magnetic order. We employ a bond operator formalism, which naturally captures both dimerization and broken spin symmetry in a…

超导电性 · 物理学 2007-05-23 Matthias Vojta , Tobias Ulbricht

In this work we study the influence of an electric field on stripes and compare our results with experimental findings from scanning tunneling microscope measurements. By introducing a negative-bias electric field into a time-dependent…

超导电性 · 物理学 2010-07-01 Daniel Springer , Siew Ann Cheong