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We theoretically explore the possibility of reducing the propagation loss in a metal-insulator-metal (MIM) waveguide, using mode combinations to achieve wall-avoiding field distributions along a certain propagation length. We present…

光学 · 物理学 2013-02-26 Francisco J. Rodríguez-Fortuño , Nader Engheta

Ballistic spin transport, through periodically stubbed waveguides, is studied in the presence of a weak spin-orbit interaction (SOI) and the resulting subband mixing. By an appropriate choice of the waveguide length and of the stub…

介观与纳米尺度物理 · 物理学 2007-05-23 X. F. Wang , P. Vasilopoulos

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

Optical waveguide theory is essential to the development of various optical devices. Although there are reports on the theory of optical waveguides with magneto-optical (MO) and magnetoelectric (ME) effects, a comprehensive theoretical…

光学 · 物理学 2023-05-22 Yoshihiro Honda , Eri Igarashi , Yuya Shoji , Tomohiro Amemiya

We report on the dependence of curvilinear shaped coplanar waveguides on the near-field diffraction patterns of spin waves propagating in perpendicularly magnetized thin films. Implementing the propagating spin waves spectroscopy techniques…

Ferromagnet/superconductor heterostructures allow for the combination of unique physical phenomena offered by the both fields of magnetism and superconductivity. It was shown recently that spin waves can be efficiently scattered in such…

超导电性 · 物理学 2021-11-10 Oleksandr V. Dobrovolskiy , Andrii V. Chumak

The discovery of the ultrafast magnetization dynamics twenty years ago has led to a broad variety of experimental techniques to explore phenomena in magnetic materials with high temporal resolution. In the present article we present a study…

介观与纳米尺度物理 · 物理学 2017-05-24 M. Mansurova , J. von der Haar , J. Panke , Jakob Walowski , Henning Ulrichs , M. Münzenberg

We present an experimental study of time refraction of spin waves propagating in microscopic waveguides under the influence of time-varying magnetic fields. Using space- and time-resolved Brillouin light scattering microscopy, we…

介观与纳米尺度物理 · 物理学 2021-04-07 K. Schultheiss , N. Sato , P. Matthies , L. Körber , K. Wagner , T. Hula , O. Gladii , J. E. Pearson , A. Hoffmann , M. Helm , J. Fassbender , H. Schultheiss

We demonstrate that the spin wave Cherenkov effect can be used to design the unidirectional spin wave emitter with tunable frequency and switchable direction of emission. In our numerical studies, we propose to use a pair of traveling…

介观与纳米尺度物理 · 物理学 2024-08-21 Gauthier Philippe , Mathieu Moalic , Jarosław W. Kłos

We present a feasibility study of logic circuits utilizing spin waves for information transmission and processing. As an alternative approach to the transistor-based architecture, logic circuits with spin wave bus do not use charge as an…

其他凝聚态物理 · 物理学 2009-11-13 Alexander Khitun , Dmitri E. Nikonov , Mingqiang Bao , Kosmas Galatsis , Kang L. Wang

Magnonics has been receiving significant attention in magnetism and spintronics because of its premise for devices using spin current carried by magnons, quanta of spin-wave excitations of a macroscopically ordered magnetic media. Although…

介观与纳米尺度物理 · 物理学 2022-11-09 Junmo Jeon , Se Kwon Kim , SungBin Lee

We theoretically demonstrate linear spin-wave nonreciprocity in a Ni80Fe20 nanostripe waveguide, based on interband magnonic transitions induced by a time-reversal and spatialinversion symmetry breaking magnetic field. An analytical…

介观与纳米尺度物理 · 物理学 2015-06-16 Kai Di , Hock Siah Lim , Vanessa Li Zhang , Ser Choon Ng , Meng Hau Kuok

Real magnonic crystals - periodic magnetic media for spin wave (magnon) propagation - may contain some defects. We report theoretical spin wave spectra of a one dimensional magnonic crystal with an isolated defect. The latter is modeled by…

材料科学 · 物理学 2007-10-25 V. V. Kruglyak , M. L. Sokolovskii , V. S. Tkachenko , A. N. Kuchko

In this paper, a magnon-bandgap controllable artificial domain wall waveguide is proposed by means of micromagnetic simulation. By the investigation of the propagation behavior and dispersion relationship of spin waves in artificial domain…

材料科学 · 物理学 2023-07-12 Hai Yu , Xiao-Ping Ma , Huanhuan Zhang , Xue-Feng Zhang , Zhaochu Luo , Hong-Guang Piao

Superconductors are materials with zero electrical resistivity and the ability to expel magnetic fields known as the Meissner effect. Their dissipationless diamagnetic response is central to magnetic levitation and circuits such as quantum…

介观与纳米尺度物理 · 物理学 2023-10-30 M. Borst , P. H. Vree , A. Lowther , A. Teepe , S. Kurdi , I. Bertelli , B. G. Simon , Y. M. Blanter , T. van der Sar

Non-Hermitian physics has recently attracted much attention in optics and photonics. Less explored is non-Hermitian magnonics that provides opportunities to take advantage of the inevitable dissipation of magnons or spin waves in magnetic…

Spin waves have risen as promising candidate information carriers for the next generation of information technologies. Recent experimental demonstrations of their detection using electron spins in diamond pave the way towards studying the…

介观与纳米尺度物理 · 物理学 2022-02-17 C. Gonzalez-Ballestero , T. van der Sar , O. Romero-Isart

We investigate the reflection coefficient of spin waves propagating in an ultra-thin ferromagnetic film with regions where saturation magnetization is modulated. We find analytically and using micromagnetic simulations that there are…

介观与纳米尺度物理 · 物理学 2020-01-08 Pablo Borys , Naser Qureshi , Cesar Ordonez-Romero , Oleg Kolokoltsev

One of the most appealing features of magnonics is the easy tunability of spin-waves propagation via external magnetic fields. Usually this requires bulky and power-hungry electromagnets which are not compatible with device miniaturization.…

Recent experiments observe the spin-wave-Meissner-current modes in ferromagnetic insulator-superconductor heterostructures, in which the coherently excited spin waves seemingly do not decay as usual beneath the superconductor strip [Borst…

介观与纳米尺度物理 · 物理学 2024-06-17 Xi-Han Zhou , Xiyin Ye , Lihui Bai , Tao Yu