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Twisted spin waves attracted research attentions lately and the orbital angular momentum they carry may be utilized in communication and computing technologies. In this work, we manifest by micromagnetic simulations that twisted spin wave…

Mesoscale and Nanoscale Physics · Physics 2021-06-09 Peiyuan Huang1 , Ruifang Wang

Magnetic auto-oscillations are damping-compensated magnetization precessions. They can be generated in spin Hall nano-oscillators (SHNO) among others. Current research on these devices is dedicated to create next generation energy-efficient…

Mesoscale and Nanoscale Physics · Physics 2024-06-25 Toni Hache , Anshu Anshu , Tetyana Shalomayeva , Rainer Stöhr , Klaus Kern , Jörg Wrachtrup , Aparajita Singha

Nonradiating electromagnetic configurations in nanostructures open new horizons for applications due to two essential features: lack of energy losses and invisibility to the propagating electromagnetic field. Such radiationless…

Mesoscale and Nanoscale Physics · Physics 2018-09-26 Maria Timofeeva , Lukas Lang , Flavia Timpu , Claude Renaut , Alexei Bouravleuv , Igor Shtrom , George Cirlin , Rachel Grange

Nanoscale topologically non-trivial magnetization configurations generate significant interest due to both the fundamental properties of their knotted structures and their potential applications in ultra-efficient computing devices. While…

Free-standing, interconnected metallic nanowire networks with density as low as 40 mg/cm^{3} have been achieved over cm-scale areas, using electrodeposition into polycarbonate membranes that have been ion-tracked at multiple angles.…

Strongly out-of-equilibrium regimes in magnetic nanostructures exhibit novel properties, linked to the nonlinear nature of magnetization dynamics, which are of great fundamental and practical interest. Here, we demonstrate that field-driven…

Plasmonic nanoantennas, the properties of which are essentially determined by their resonance modes, are of interest both fundamentally and for various applications. Antennas with various shapes, geometries and compositions have been…

Optics · Physics 2015-08-17 Qiang Zhang , Jun Jun Xiao , Xiao Ming Zhang , Dezhuan Han , Lei Gao

Two-dimensional ferromagnetic nanodot structures exhibit intriguing magnetization dynamics and hold promise for future magnonic devices. In this study, we present a comparative experimental investigation into the reconfigurable…

Mesoscale and Nanoscale Physics · Physics 2024-07-15 Swapnil Barman , Rajib Kumar Mitra

We investigate tripartite coupling between phonons, magnons and photons in a periodic array of elliptical magnetostrictive nanomagnets delineated on a piezoelectric substrate to form a two-dimensional two-phase multiferroic crystal. A…

Mesoscale and Nanoscale Physics · Physics 2023-01-24 Raisa Fabiha , Jonathan Lundquist , Sudip Majumder , Erdem Topsakal , Anjan Barman , Supriyo Bandyopadhyay

Patterned magnetic nanostructures are potential candidates for future energy efficient, on-chip communication devices. Here, we have experimentally and numerically studied the role of nanochannels to manipulate spin waves in Ni80Fe20…

Mesoscale and Nanoscale Physics · Physics 2020-12-30 Sourav Sahoo , Surya Narayan Panda , Saswati Barman , Yoshichika Otani , Anjan Barman

Nanoparticles levitated in vacuum can be set to spin at ultimate frequencies, limited only by the tensile strength of the material. At such high frequencies, drastic changes to the dynamics of solid-state quantum excitations are to be…

Mesoscale and Nanoscale Physics · Physics 2020-05-14 Daniel Hümmer , René Lampert , Katja Kustura , Patrick Maurer , Carlos Gonzalez-Ballestero , Oriol Romero-Isart

We develop a model of coronal-loop oscillations that treats the observed bright loops as an integral part of a larger 3-D magnetic structure comprised of the entire magnetic arcade. We demonstrate that magnetic arcades within the solar…

Solar and Stellar Astrophysics · Physics 2018-03-28 Bradley W. Hindman , Rekha Jain

A ring of sub-wavelength spaced dipole-coupled quantum emitters possesses only few radiant but many extraordinarily subradiant collective modes. These exhibit a 3D-confined spatial radiation field pattern forming a nano-scale high-Q optical…

In the emerging field of magnonics, spin waves are foreseen as signal carriers for future spintronic information processing and communication devices, owing to both the very low power losses and a high device miniaturisation potential…

The existence and localization of collective electron states for nanodiamond particles were studied both by solving a one-particle one-dimensional Schr\"odinger equation in the Kronig-Penney potential and by ab initio computations of ground…

Materials Science · Physics 2013-07-25 Ivan A. Denisov , Andrey A. Zimin , Leslie A. Bursill , Peter I. Belobrov

Diameter-modulated nanowires offer an important paradigm to design the magnetization response of 3D magnetic nanostructures by engineering the domain wall pinning. With the aim to understand its nature and to control the process, we analyze…

Mesoscale and Nanoscale Physics · Physics 2022-06-16 Jose A. Fernandez-Roldan , Rafael P. del Real , Cristina Bran , Manuel Vazquez , Oksana Chubykalo-Fesenko

Magnonics is gaining momentum as an emerging technology for information processing. The wave character and Joule heating-free propagation of spin-waves hold promises for highly efficient analog computing platforms, based on integrated…

Antiferromagnets offer remarkable promise for future spintronics devices, where antiferromagnetic order is exploited to encode information. The control and understanding of antiferromagnetic domain walls (DWs) - the interfaces between…

The spin dynamics of all ferromagnetic materials are governed by two types of collective excitations: spin waves and domain walls. The fundamental processes underlying these collective modes, such as exchange interactions and magnetic…

Mesoscale and Nanoscale Physics · Physics 2015-09-22 A. Spinelli , B. Bryant , F. Delgado , J. Fernández-Rossier , A. F. Otte

Magnetic insulators, such as yttrium iron garnet (Y$_3$Fe$_5$O$_{12}$), are ideal materials for ultra-low power spintronics applications due to their low energy dissipation and efficient spin current generation and transmission. Recently,…

Mesoscale and Nanoscale Physics · Physics 2016-12-05 Matthias B. Jungfleisch , Junjia Ding , Wei Zhang , Wanjun Jiang , John E. Pearson , Valentine Novosad , Axel Hoffmann
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