Towards artificial Ising spin glasses: Thermal ordering in randomized arrays of Ising-type nanomagnets

Michael Saccone, Andreas Scholl, Sven Velten, Scott Dhuey, Kevin Hofhuis, Clemens Wuth, Yen-Lin Huang, Zuhuang Chen, Rajesh V. Chopdekar, Alan Farhan

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

We explore the thermodynamics in two-dimensional arrays consisting of Ising-type nanomagnets lithographically arranged onto random sites and angular orientations. Introducing these basic spin-glass ingredients, we study the characteristic features of the low-energy states achieved, following thermal-annealing protocols. From direct visualization of real-time dynamics, we record relaxation timescales together with magnetic susceptibility variations over temperature, revealing trends towards short-range order as randomness is increased, but falling short of pure spin-glass behavior. Our work provides a route towards the realization of artificial Ising spin-glass systems.

Original languageEnglish
Article number224403
Pages (from-to)1-7
Number of pages7
JournalPhysical Review B
Volume99
Issue number22
DOIs
StatePublished - 3 Jun 2019

Fingerprint

Dive into the research topics of 'Towards artificial Ising spin glasses: Thermal ordering in randomized arrays of Ising-type nanomagnets'. Together they form a unique fingerprint.

Cite this