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We have measured the angular dependence of ferromagnetic resonance (FMR) spectra for Fibonacci-distorted, Kagome artificial spin ice (ASI). The number of strong modes in the FMR spectra depend on the orientation of the applied DC magnetic…

Mesoscale and Nanoscale Physics · Physics 2021-05-12 Ali Frotanpour , Justin Woods , Barry Farmer , Amrit P. Kaphle , Lance E. DeLong

We report angular-dependent spin-wave spectroscopy on kagome artificial spin ice made of large arrays of interconnected Ni80Fe20 nanobars. Spectra taken in saturated and disordered states exhibit a series of resonances with characteristic…

Mesoscale and Nanoscale Physics · Physics 2017-07-26 V. S. Bhat , F. Heimbach , I. Stasinopoulos , D. Grundler

Temperature-dependent dynamical spin correlations, which can be readily accessed via a variety of experimental techniques, hold the potential of offering a unique fingerprint of quantum spin liquids and other intriguing dynamical states. In…

Strongly Correlated Electrons · Physics 2021-01-21 P. Prelovšek , M. Gomilšek , T. Arh , A. Zorko

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

We report the experimental and theoretical characterization of the angular-dependent spin dynamics in arrays of ferromagnetic nanodisks arranged on a honeycomb lattice. The magnetic field and microwave frequency dependence, measured by…

Mesoscale and Nanoscale Physics · Physics 2020-05-19 Mojtaba Taghipour Kaffash , Wonbae Bang , Sergi Lendinez , Axel Hoffmann , John B. Ketterson , M. Benjamin Jungfleisch

Strongly correlated Kagome magnets are promising candidates for achieving controllable topological devices owing to the rich interplay between inherent Dirac fermions and correlation-driven magnetism. Here we report tunable local magnetism…

We predict a mechanism to controllably manipulate domain walls in kagome antiferromagnets via a single linearly polarized spin-wave source. We show by means of atomistic spin dynamics simulations of antiferromagnets with kagome structure…

Mesoscale and Nanoscale Physics · Physics 2021-10-14 Davi R. Rodrigues , Akshaykumar Salimath , Karin Everschor-Sitte , Kjetil M. D. Hals

Artificial spin ice (ASI) represents a class of uniquely structured superlattices comprising geometrically arranged interacting nanomagnets. This arrangement facilitates the exploration of magnetic frustration phenomena and related spin…

Mesoscale and Nanoscale Physics · Physics 2024-07-02 G. A. Gomez-Iriarte , D. E. Gonzalez-Chavez , R. L. Sommer , J. P. Sinnecker

We present results of ferromagnetic resonance (FMR) experiments and micromagnetic simulations for a distorted, 2D Kagome artificial spin ice. The distorted structure is created by continuously modulating the 2D primitive lattice translation…

Mesoscale and Nanoscale Physics · Physics 2021-01-04 Ali Frotanpour , Justin Woods , Barry Farmer , Amrit P. Kaphle , Lance E. De Long , Loris Giovannini , Federico Montoncello

Magnetization reversal of interconnected Kagome artificial spin ice was studied by the first-order reversal curve (FORC) technique based on the magneto-optical Kerr effect and magnetoresistance measurements. The magnetization reversal…

Mesoscale and Nanoscale Physics · Physics 2017-10-11 L. Sun , C. Zhou , J. H. Liang , T. Xing , N. Lei , P. Murray , Kai Liu , C. Won , Y. Z. Wu

We report magnetization and neutron scattering measurements down to 60 mK on a new family of Fe based kagome antiferromagnets, in which a strong local spin anisotropy combined with a low exchange path network connectivity lead to domain…

Strongly Correlated Electrons · Physics 2012-01-04 E. Lhotel , V. Simonet , J. Ortloff , B. Canals , C. Paulsen , E. Suard , T. Hansen , D. J. Price , P. T. Wood , A. K. Powell , R. Ballou

We report broadband spin-wave spectroscopy on kagome artificial spin ice (ASI) made of large arrays of interconnected Ni$_{80}$Fe$_{20}$ nanobars. Spectra taken in saturated and disordered states exhibit a series of resonances with…

Mesoscale and Nanoscale Physics · Physics 2016-04-13 V. S. Bhat , F. Heimbach , I. Stasinopoulos , D. Grundler

We report the dependence of the magnetization dynamics in a square artificial spin-ice lattice on the in-plane magnetic field angle. Using two complementary measurement techniques - broadband ferromagnetic resonance and micro-focused…

Mesoscale and Nanoscale Physics · Physics 2021-04-27 Sergi Lendinez , Mojtaba Taghipour Kaffash , M. Benjamin Jungfleisch

We have studied frustrated kagome arrays and unfrustrated honeycomb arrays of magnetostatically-interacting single-domain ferromagnetic islands with magnetization normal to the plane. The measured pairwise spin correlations of both lattices…

Spin-torque ferromagnetic resonance (ST-FMR) arises in heavy metal/ferromagnet heterostructures when an alternating charge current is passed through the bilayer stack. The methodology to detect the resonance is based on the anisotropic…

Kagome lattice can host abundant exotic quantum states such as superconductivity and charge density wave (CDW). Recently, successive orders of A-type antiferromagnetism (AFM), CDW and canted AFM have been manifested upon cooling in kagome…

Artificial spin ice has become a valuable tool for understanding magnetic interactions on a microscopic level. The strength in the approach lies in the ability of a synthetic array of nanoscale magnets to mimic crystalline materials,…

Materials Science · Physics 2011-12-23 Stephen A. Daunheimer , Olga Petrova , Oleg Tchernyshyov , John Cumings

Artificial spin ice systems have seen burgeoning interest due to their intriguing physics and potential applications in reprogrammable memory, logic and magnonics. Integration of artificial spin ice with functional magnonics is a relatively…

We model the dynamics of magnetization in an artificial analog of spin ice specializing to the case of a honeycomb network of connected magnetic nanowires. The inherently dissipative dynamics is mediated by the emission, propagation and…

Mesoscale and Nanoscale Physics · Physics 2012-04-16 Yichen Shen , Olga Petrova , Paula Mellado , Stephen Daunheimer , John Cumings , Oleg Tchernyshyov

Magnetization dynamics in an artificial square spin-ice lattice made of Ni80Fe20 with magnetic field applied in the lattice plane is investigated by broadband ferromagnetic resonance spectroscopy. The experimentally observed dispersion…

Mesoscale and Nanoscale Physics · Physics 2016-03-03 M. B. Jungfleisch , W. Zhang , E. Iacocca , J. Sklenar , J. Ding , W. Jiang , S. Zhang , J. E. Pearson , V. Novosad , J. B. Ketterson , O. Heinonen , A. Hoffmann
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