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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

We present the dynamic response of a connected Kagome artificial spin ice with emphasis on the effect of the vertex magnetization configuration on the mode characteristics. We use broadband ferromagnetic resonance (FMR) spectroscopy and…

Mesoscale and Nanoscale Physics · Physics 2021-02-24 Ali Frotanpour , Justin Woods , Barry Farmer , Amrit P. Kaphle , Lance 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

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

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 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

Nanopatterned magnetic thin films offer a platform for exploration of tailored magnetic properties such as emergent long-range order. A prominent example is artificial spin ice (ASI), where an arrangement of nanoscale magnetic elements,…

Mesoscale and Nanoscale Physics · Physics 2025-09-16 Anders Strømberg , Einar Digernes , Rajesh Vilas Chopdekar , Jostein Grepstad , Erik Folven

We study the angular dependence of ferromagnetic resonance (FMR) in Ni$_{36}$Fe$_{64}$ wires using both traditional microwave-absorption and electrical-detection techniques. In our experiments we apply a static magnetic field at an angle…

Materials Science · Physics 2023-07-19 Qiang Gao , Maxim Tsoi

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…

We investigate spin dynamics of artificial spin ice (ASI) where topological defects confine magnon modes in Ni$_{81}$Fe$_{19}$ nanomagnets arranged on an interconnected kagome lattice. Brillouin light scattering microscopy performed on…

Mesoscale and Nanoscale Physics · Physics 2020-09-16 V. S. Bhat , S. Watanabe , K. Baumgaertl , D. Grundler

In artificial spin ice (ASI), magnetic interactions between nanomagnets determine both the stable states and the switching pathways under an applied field. Here, first-order reversal curve (FORC) measurements are used to map how these…

Materials Science · Physics 2026-04-28 Brindaban Ojha , Matías P. Grassi , Vassilios Kapaklis

The analytical and numerical study of the angular dependence of magnetoresistance in layered quasi-two-dimensional (Q2D) metals is performed. The harmonic expansion analytical formulas for the angular dependence of Fermi-surface…

Mesoscale and Nanoscale Physics · Physics 2020-09-02 P. D. Grigoriev

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

The spin-wave dynamics of the ferromagnetic nanoarrays termed artificial spin ice (ASI) are known to vary depending on their magnetic microstate. However, little work has been done to characterise this relationship. Recent advances in…

Mesoscale and Nanoscale Physics · Physics 2020-01-10 Daan M. Arroo , Jack C. Gartside , Will R. Branford

We find unusual temperature dependence of the ferromagnetic resonance (FMR) frequency $f_{\rm R}$ for the spin-reorientation (SR) transition, in which the easy axis changes depending on temperature, observed in the Nd permanent magnet,…

Statistical Mechanics · Physics 2020-09-21 Masamichi Nishino , Seiji Miyashita

In artificial spin ice systems, an interplay of defects and dipolar interactions is expected to play important roles in stabilizing different collective magnetic states. In this work, we investigated the magnetization reversal of individual…

Mesoscale and Nanoscale Physics · Physics 2021-01-04 Neeti Keswani , Ranveer Singh , Yoshikata Nakajima , Sakthi Kumar , Tapobrata Som , Pintu Das

The electron spin resonance (ESR) spectroscopy was employed to investigate the spin dynamics in triangular lattice antiferromagnets CuCr$_{1-x}$Mg$_{x}$O$_2$ with $x =$ 0 and 0.02. All spectra can be well fitted by a single Lorentzian…

Strongly Correlated Electrons · Physics 2012-07-16 Renwen Li , Zhe Qu , Wei Tong , Yuheng Zhang

Van der Waals (vdW) antiferromagnets are exceptional platforms for exploring the spin dynamics of antiferromagnetic materials owing to their weak interlayer exchange coupling. In this study, we examined the antiferromagnetic resonance…

For over ten years, arrays of interacting single-domain nanomagnets, referred to as artificial spin ices, have been engineered with the aim to study frustration in model spin systems. Here, we use Fresnel imaging to study the reversal…

The shape of the Fermi surface influences many physical phenomena in materials and a growing interest in how the spin-dependent properties are related to the fermiology of crystals has surged. Recently, a novel current-dependent nonlinear…

Mesoscale and Nanoscale Physics · Physics 2024-05-14 Anna C. Marx , Homayoun Jafari , Eelco Tekelenburg , Maria A. Loi , Jagoda Slawinska , Marcos H. D. Guimaraes
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