Results 11 to 20 of about 2,454,862 (267)
Apparent ferromagnetism in the pinwheel artificial spin ice [PDF]
Physical Review B, 2018 Magnetic artificial spin ice provides examples of how competing interactions between magnetic nanoelements can lead to a range of fascinating and unusual phenomena. We examine theoretically a class of spin ice tilings, called pinwheel, for which near degeneracy of spin configuration energies can be achieved.
Fabio Nascimento +2 more
exaly +4 more sources
A Representation of Artificial Spin Ice for Evolutionary Search [PDF]
The 2021 Conference on Artificial Life, 2021 Arrangements of nanomagnets known as artificial spin ices show great potential for use in unconventional computation. The majority of exploratory work done in this area considers just a small handful of well studied geometries (nanomagnetic arrangements), and uses them as if they were a black box.
Arthur Penty, Gunnar Tufte
core +6 more sources
Crystallizing Kagome Artificial Spin Ice
Physical Review Letters, 2022 Artificial spin ices are engineered arrays of dipolarly coupled nanobar magnets. They enable direct investigations of fascinating collective phenomena from their diverse microstates. However, experimental access to ground states in the geometrically frustrated systems has proven difficult, limiting studies and applications of novel properties and ...
Wen-Cheng Yue +15 more
openaire +4 more sources
Spin wave spectral probing of degenerate microstates in building-block of square artificial spin ice [PDF]
AIP Advances, 2021 We have investigated the spin wave modes of dipolar coupled, highly shape anisotropic magnetic nanoislands forming square artificial spin ice system by performing micromagnetic simulations using MuMax3 in combination with Matlab coding.
Nimisha Arora, Pintu Das
doaj +2 more sources
flatspin: A large-scale artificial spin ice simulator [PDF]
Physical Review B, 2022 We present flatspin, a novel simulator for systems of interacting mesoscopic spins on a lattice, also known as artificial spin ice (ASI). Our magnetic switching criteria enables ASI dynamics to be captured in a dipole model. Through GPU acceleration, flatspin can simulate realistic dynamics of millions of magnets within practical time frames.
Jensen, Johannes H. +7 more
openaire +5 more sources
Spin-Wave Dynamics and Symmetry Breaking in an Artificial Spin Ice [PDF]
Nano Letters, 2021 Artificial spin ices are periodic arrangements of interacting nanomagnets successfully used to investigate emergent phenomena in the presence of geometric frustration. Recently, it has been shown that artificial spin ices can be used as building blocks for creating functional materials, such as magnonic crystals, and support a large number of ...
Susmita Saha +2 more
exaly +7 more sources
Real-space observation of ergodicity transitions in artificial spin ice [PDF]
Nature Communications, 2023 Ever since its introduction by Ludwig Boltzmann, the ergodic hypothesis became a cornerstone analytical concept of equilibrium thermodynamics and complex dynamic processes.
Michael Saccone +6 more
doaj +2 more sources
Emerging Chirality in Artificial Spin Ice [PDF]
Science, 2012 Chiral Ice Water ice, even at the lowest temperatures, is not completely “frozen”—its lattice structure allows for multiple equivalent ground states and it thus retains finite entropy even at absolute zero. Equivalent structures are realized in frustrated magnets called spin ices, where spins interact ferromagnetically, and in ...
Branford, WR +4 more
openaire +5 more sources
Perpendicular-anisotropy artificial spin ice with spontaneous ordering: a platform for reservoir computing with flexible timescales [PDF]
Communications EngineeringArrays of coupled nanomagnets have wide-ranging fundamental and practical applications in artificial spin ices, reservoir computing and spintronics. However, lacking in these fields are nanomagnets with perpendicular magnetic anisotropy with sufficient ...
Aleksandr Kurenkov +6 more
doaj +2 more sources
Persistent dynamic magnetic state in artificial honeycomb spin ice [PDF]
Nature Communications, 2023 Topological magnetic charges, arising due to the non-vanishing magnetic flux on spin ice vertices, serve as the origin of magnetic monopoles that traverse the underlying lattice effortlessly.
J. Guo +7 more
doaj +2 more sources