Advances in artificial spin ice

SH Skjærvø, CH Marrows, RL Stamps… - Nature Reviews …, 2020 - nature.com
Artificial spin ices consist of nanomagnets arranged on the sites of various periodic and
aperiodic lattices. They have enabled the experimental investigation of a variety of …

Cooperative magnetic phenomena in artificial spin systems: spin liquids, Coulomb phase and fragmentation of magnetism–a colloquium

N Rougemaille, B Canals - The European Physical Journal B, 2019 - Springer
Two-dimensional arrays of interacting magnetic nanostructures offer a remarkable
playground for simulating, experimentally, lattice spin models. Initially designed to capture …

Interaction modifiers in artificial spin ices

E Östman, H Stopfel, IA Chioar, UB Arnalds, A Stein… - Nature Physics, 2018 - nature.com
The modification of geometry and interactions in two-dimensional magnetic nanosystems
has enabled a range of studies addressing the magnetic order,,,,–, collective low-energy …

Real-space observation of ergodicity transitions in artificial spin ice

M Saccone, F Caravelli, K Hofhuis, S Dhuey… - nature …, 2023 - nature.com
Ever since its introduction by Ludwig Boltzmann, the ergodic hypothesis became a
cornerstone analytical concept of equilibrium thermodynamics and complex dynamic …

Vogel-Fulcher-Tammann freezing of a thermally fluctuating artificial spin ice probed by x-ray photon correlation spectroscopy

SA Morley, D Alba Venero, JM Porro, ST Riley, A Stein… - Physical Review B, 2017 - APS
We report on the crossover from the thermal to the athermal regime of an artificial spin ice
formed from a square array of magnetic islands whose lateral size, 30 nm× 70 nm, is small …

Spontaneous magnetic superdomain wall fluctuations in an artificial antiferromagnet

XM Chen, B Farmer, JS Woods, S Dhuey, W Hu… - Physical Review Letters, 2019 - APS
Collective dynamics often play an important role in determining the stability of ground states
for both naturally occurring materials and metamaterials. We studied the temperature …

Collective magnetic dynamics in artificial spin ice probed by ac susceptibility

M Pohlit, G Muscas, IA Chioar, H Stopfel, A Ciuciulkaite… - Physical Review B, 2020 - APS
We report on the study of the thermal dynamics of square artificial spin ice, probed by means
of temperature-and frequency-dependent ac susceptibility. Pronounced influence of the …

Multiple energy scales in mesospin systems: the vertex-frustrated Saint George lattice

H Stopfel, UB Arnalds, A Stein, TPA Hase… - Physical Review …, 2021 - APS
The interplay between topology and energy hierarchy plays a vital role in the collective
magnetic order in artificial ferroic systems. Here we investigate, experimentally, the effect of …

[HTML][HTML] The effect of confinement on thermal fluctuations in nanomagnets

SD Slöetjes, B Hjörvarsson, V Kapaklis - Applied Physics Letters, 2021 - pubs.aip.org
We study the magnetization dynamics in nanomagnets excited by stochastic magnetic fields
to mimic temperature in a micromagnetic framework. The effect of confinement arising from …

Experimental and theoretical evidences for the ice regime in planar artificial spin ices

RP Loreto, FS Nascimento, RS Gonçalves… - Journal of Physics …, 2018 - iopscience.iop.org
In this work, we explore a kind of geometrical effect in the thermodynamics of artificial spin
ices (ASI). In general, such artificial materials are athermal. Here, We demonstrate that …