Skip to main content

Magnetic multipole analysis of kagome and artificial ice dipolar arrays

Möller, Gunnar, Moessner, Roderich (2009) Magnetic multipole analysis of kagome and artificial ice dipolar arrays. Physical Review B: Condensed Matter and Materials Physics, 80 (14). p. 140409. ISSN 0163-1829. (doi:10.1103/PhysRevB.80.140409) (KAR id:55531)

PDF Author's Accepted Manuscript
Language: English
Download (198kB) Preview
Official URL


We analyse an array of linearly extended monodomain dipoles forming square and kagome lattices. We find that its phase diagram contains two (distinct) finite-entropy kagome ice regimes - one disordered, one algebraic - as well as a low-temperature ordered phase. In the limit of the islands almost touching, we find a staircase of corresponding entropy plateaux, which is analytically captured by a theory based on magnetic charges. For the case of a modified square ice array, we show that the charges (`monopoles') are excitations experiencing two distinct Coulomb interactions: a magnetic `three-dimensional' one as well as a logarithmic `two dimensional' one of entropic origin.

Item Type: Article
DOI/Identification number: 10.1103/PhysRevB.80.140409
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 15:54 UTC
Last Modified: 05 Jul 2019 10:36 UTC
Resource URI: (The current URI for this page, for reference purposes)
Möller, Gunnar:
  • Depositors only (login required):


Downloads per month over past year