Lecture image placeholder

Premium content

Access to this content requires a subscription. You must be a premium user to view this content.

Monthly subscription - $9.99Pay per view - $4.99Access through your institutionLogin with Underline account
Need help?
Contact us
Lecture placeholder background
VIDEO DOI: https://doi.org/10.48448/ps4j-c972

technical paper

MMM 2022

November 07, 2022

Minneapolis, United States

Effects of thermal fluctuations within and among the magnetic textures in artificial spin ice

Artificial spin ice lattices consist of extended arrays of dipole coupled nanomagnets. This relatively simple system has seen a striking amount of applications, such as mimicking spin frustration, reconfigurable magnonic crystals, and in the last years it displayed potential for novel forms of computation. We have recently investigated the effects of the internal texture of these nanomagnets, specifically the thermal behavior, and found the excitation of magnons, and additional fluctuations at the ends of the nanomagnet. These effects offer a different view of the effect of temperature on the magnetism than the traditional flipping of the Ising spin. Here, we present measurements using AC susceptibility and temperature dependent MOKE of artificial spin ice structures, which indicate the presence of these additional texture fluctuations. It is shown that, even though they exist on a different length scale than the binary switch of the internal magnetization, both types of fluctuations can be tuned through the interaction strength of the mesospins. In addition, we present a detailed simulation study that shows the effects of coupling of these texture fluctuations across a gap, both in a double magnet configuration and an ASI vertex, and capture these fluctuations in energy landscapes. We determine the energy barriers, eigenmodes, and curvatures of the energy landscapes at the metastable minima and relate them to the attempt frequencies of the system. These investigations of the internal texture could lead to a rethinking of the artificial spin ice lattice, in which case the internal textures could be used to mimic magnetic effects on different length scales.


Transcript English (automatic)

Next from MMM 2022

Ab initio Crystal Field Splittings for Lanthanide Dopants in Oxide Materials for Quantum Information
technical paper

Ab initio Crystal Field Splittings for Lanthanide Dopants in Oxide Materials for Quantum Information

MMM 2022

Yueguang Shi and 1 other author

07 November 2022

Stay up to date with the latest Underline news!

Select topic of interest (you can select more than one)


  • All Lectures
  • For Librarians
  • Resource Center
  • Free Trial
Underline Science, Inc.
1216 Broadway, 2nd Floor, New York, NY 10001, USA

© 2023 Underline - All rights reserved