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Artificial Square Ice and Related Dipolar Nanoarrays

Möller, Gunnar, Moessner, R (2006) Artificial Square Ice and Related Dipolar Nanoarrays. Physical Review Letters, 96 (2). p. 237202. ISSN 0031-9007. E-ISSN 1079-7114. (doi:10.1103/PhysRevLett.96.237202) (KAR id:55552)

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We study a frustrated dipolar array recently manufactured lithographically by Wang et al. [Nature (London) 439, 303 (2006)] in order to realize the square ice model in an artificial structure. We discuss models for thermodynamics and dynamics of this system. We show that an ice regime can be stabilized by small changes in the array geometry; a different magnetic state, kagome ice, can similarly be constructed. At low temperatures, the square ice regime is terminated by a thermodynamic ordering transition, which can be chosen to be ferro- or antiferromagnetic. We show that the arrays do not fully equilibrate experimentally, and identify a likely dynamical bottleneck.

Item Type: Article
DOI/Identification number: 10.1103/PhysRevLett.96.237202
Uncontrolled keywords: Physics of Quantum Materials
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Gunnar Moeller
Date Deposited: 05 Dec 2017 14:58 UTC
Last Modified: 05 Jul 2019 10:41 UTC
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