Coexisting mechanisms of thermally driven magnetization reversal in shakti spin ice systems

KUCHKIN, Vladyslav; Arnalds, Unnar B.; Jónsson, Hannes; Bessarab, Pavel F.

doi:10.1103/pr2y-dfbd

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Coexisting mechanisms of thermally driven magnetization reversal in shakti spin ice systems

KUCHKIN, Vladyslav; Arnalds, Unnar B.; Jónsson, Hannes et al.

2025 • In Physical Review Research, 7 (3)

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https://hdl.handle.net/10993/66080

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10.1103/pr2y-dfbd

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Keywords :

spin ice; geodesic nudged elastic band method; mumax3; micromagnetism

Abstract :

[en] The switching mechanisms in artificial spin ice systems are investigated with focus on shakti and vertex-modified shakti lattices. Minimum energy paths are calculated using the geodesic nudged elastic band method implemented with a micromagnetic description of the system, including the internal magnetic structure of the islands and edge deviations. Two switching mechanisms, uniform magnetization rotation and domain wall formation, are found to have comparable activation energies. The preference for one over the other depends strongly on the saturation magnetization and the magnetic ordering of neighboring islands. Surprisingly, these mechanisms can coexist, leading to an enhanced probability of magnetization reversal. These results provide valuable insight that can help control internal magnetization switching processes in spin ice systems and help predict their thermodynamic properties.

Disciplines :

Physics

Author, co-author :

KUCHKIN, Vladyslav ; University of Luxembourg

Arnalds, Unnar B. ; University of Iceland

Jónsson, Hannes ; University of Iceland

Bessarab, Pavel F. ; University of Iceland ; Linnaeus University

External co-authors :

Language :

English

Title :

Coexisting mechanisms of thermally driven magnetization reversal in shakti spin ice systems

Publication date :

02 September 2025

Journal title :

Physical Review Research

eISSN :

2643-1564

Publisher :

American Physical Society (APS)

Volume :

Issue :

Peer reviewed :

Peer Reviewed verified by ORBi

Focus Area :

Physics and Materials Science

Development Goals :

9. Industry, innovation and infrastructure

Additional URL :

https://link.aps.org/article/10.1103/pr2y-dfbd

European Projects :

HE - 101203692 - QUANTHOPF - Magnetic quantum hopfions as topologically protected states for quantum computing

Funders :

Fonds National de la Recherche Luxembourg
Horizon Europe
Vetenskapsrådet
Crafoordska Stiftelsen
project Magnetic Metamaterials from the Icelandic Research Fund
European Union

Funding number :

101203692 - QUANTHOPF

Available on ORBilu :

since 21 October 2025

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