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Novel material properties can be realized by designing waves' dispersion relations in artificial crystals. The crystal's structural length scales may range from nano- (light) up to centimeters (sound waves). Because of their emergent…

Materials Science · Physics 2012-01-05 Benjamin Lenk , Henning Ulrichs , Fabian Garbs , Markus Münzenberg

Moir\'e magnetism, parallel with moir\'e electronics that has led to novel correlated and topological electronic states, emerges as a new venue to design and control exotic magnetic phases in twisted magnetic two-dimensional(2D) crystals.…

An energy-efficient voltage controlled domain wall device for implementing an artificial neuron and synapse is analyzed using micromagnetic modeling in the presence of room temperature thermal noise. By controlling the domain wall motion…

Mesoscale and Nanoscale Physics · Physics 2020-03-31 Md Ali Azam , Dhritiman Bhattacharya , Damien Querlioz , Caroline A. Ross , Jayasimha Atulasimha

Atomically thin van der Waals magnetic materials have not only provided a fertile playground to explore basic physics in the two-dimensional (2D) limit but also created vast opportunities for novel ultrafast functional devices. Here we…

Mesoscale and Nanoscale Physics · Physics 2024-08-20 F. Michael Bartram , Meng Li , Liangyang Liu , Zhiming Xu , Yongchao Wang , Mengqian Che , Hao Li , Yang Wu , Yong Xu , Jinsong Zhang , Shuo Yang , Luyi Yang

Tunable magnetic interactions in high-mobility nonmagnetic semiconductor heterostructures are centrally important to spin-based quantum technologies. Conventionally, this requires incorporation of "magnetic impurities" within the…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Christoph Siegert , Arindam Ghosh , Michael Pepper , Ian Farrer , David A. Ritchie

Altermagnets recently came into the spotlight as a new class of magnetic materials, arising as a consequence of specific crystal symmetries. They are characterized by a spin-polarized electronic band structure similar to ferromagnets, but…

Patterning nanomagnets in three-dimensions presents a new paradigm in condensed matter physics and allows access to a plethora of fundamental phenomena including robust spin textures, magnetic metamaterials that are home to defects carrying…

Mesoscale and Nanoscale Physics · Physics 2018-12-07 Andrew May , Matthew Hunt , Arjen Van Den Berg , Alaa Hejazi , Sam Ladak

Artificial spin-vortex ice ('ASVI') is a reconfigurable nanomagnetic metamaterial consisting of magnetic nanoislands tailored to support both Ising macrospin and vortex textures. ASVI has recently shown functional applications including…

We have investigated the generation of spin waves in the free layer of an extended spin-valve structure with a nano-scaled point contact driven by both microwave and direct electric current using Brillouin light scattering microscopy.…

Three-dimensional magnetic metamaterials feature interesting phenomena that arise from a delicate interplay of material properties, local anisotropy, curvature, and connectivity. A particularly interesting magnetic lattice that combines…

Mesoscale and Nanoscale Physics · Physics 2024-05-24 Ami S. Koshikawa , Justin Llandro , Masayuki Ohzeki , Shunsuke Fukami , Hideo Ohno , Naëmi Leo

The rapidly expanding research in Spintronics, the electronics utilizing the electron spin instead of its charge, is driven by the very interesting potential applications. The actual task is to develop principles for the spin manipulations…

Materials Science · Physics 2009-11-10 A. V. Scherbakov , A. V. Akimov , D. R. Yakovlev , W. Ossau , L. Hansen , A. Waag , L. W. Molenkamp

Strongly-interacting nanomagnetic systems are pivotal across next-generation technologies including reconfigurable magnonics and neuromorphic computation. Controlling magnetisation state and local coupling between neighbouring nanoelements…

Mesoscale and Nanoscale Physics · Physics 2021-01-21 K. D. Stenning , J. C. Gartside , T. Dion , A. Vanstone , D. M. Arroo , W. R. Branford

One recent breakthrough in the field of magnonics is the experimental realization of reconfigurable spin-wave nanochannels formed by magnetic domain wall with a width of $10-100$ nm [Wagner \emph{et al}., Nat. Nano. \textbf{11}, 432…

Mesoscale and Nanoscale Physics · Physics 2018-03-21 Beining Zhang , Zhenyu Wang , Yunshan Cao , Peng Yan , X. R. Wang

Controlling the size and distribution of potential barriers within a medium of interacting particles can unveil unique collective behaviors and innovative functionalities. In this study, we introduce a unique superconducting hybrid device…

In this paper we conduct Monte Carlo simulations to investigate the thermodynamic properties of a geometry of artificial spin ice recently proposed in the literature that had been termed "rewritable" spin ice, for its experimental…

Mesoscale and Nanoscale Physics · Physics 2019-08-01 R. A. Stancioli , L. A. S. Mól

The demonstration of the generation and control of a pure spin current (without net charge flow) by electric fields and/or temperature gradient has been an essential leap in the quest for low-power consumption electronics. The key issue of…

Mesoscale and Nanoscale Physics · Physics 2013-10-10 Chenglong Jia , Jamal Berakdar

Emerging new concepts, such as magnetic charge dynamics in two-dimensional magnetic material, can provide novel mechanism for spin based electrical transport at macroscopic length. In artificial spin ice of single domain elements, magnetic…

Mesoscale and Nanoscale Physics · Physics 2021-02-25 Yiyao Chen , George Yumnam , Jiasen Guo , Laura Stingaciu , Piotr Zolnierczuk , Valeria Lauter , Deepak K. Singh

Spin waves (SWs), the collective precessional motion of spins in a magnetic system, have been proposed as a promising alternative system with low-power consumption for encoding information. Spin Hall nano-oscillator (SHNO), a new-type…

Mesoscale and Nanoscale Physics · Physics 2020-12-02 Liyuan Li , Lina Chen , Ronghua Liu , Youwei Du

Active control of spin-wave dynamics is demonstrated using broadband ferromagnetic resonance in two-dimensional Ni80Fe20 antidot lattices arranged in hexagonal lattice with fixed lattice constant but varying antidot diameter. A strong…

Mesoscale and Nanoscale Physics · Physics 2018-12-24 Samiran Choudhury , Sudip Majumder , Saswati Barman , YoshiChika Otani , Anjan Barman

Domain wall propagation dynamics have been studied in nanostructured artificial kagome spin ice structures. A stripline circuit has been used to provide localised pulsed magnetic fields within the artificial spin ice structure. This…

Mesoscale and Nanoscale Physics · Physics 2017-03-22 D. M. Burn , M. Chadha , W. R. Branford