Ground state candidate and thermodynamics of Apamea spin ice

Physical review. E 2026

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Authors: Yuriy Shevchenko, Vladislav Sergeevich Strongin, Ivan Trefilov, E.A. Lobanova, P. A. Ovchinnikov, Nikita Ternovoi, Mihail Cherkasov, Konstantin Valentinovich Nefedev
DOI: 10.1103/gw17-fhgk
Cited by: 1
References: 26

Abstract

We consider the dipolar spin ice on a 2D Apamea lattice whose geometry is derived from the square spin ice. We propose ground-state candidate configurations and show that not all vertices are in energetically favorable states. There is no macroscopic degeneracy of the ground-state candidate. By using the numerical Metropolis method, we demonstrate the existence of three phases of magnetic order and explain their origins. A good agreement between the Metropolis and XMCD experiment is demonstrated, and the improved Apamea lattice geometry for the experimental observation of the dynamics in the ordered state is proposed.

Fields of Study & Subjects

Advanced Condensed Matter Physics Theoretical and Computational Physics Physics of Superconductivity and Magnetism

Publication details

Journal / source
Physical review. E
Publisher
American Physical Society (APS)
Volume
113
Issue
2
Pages
024128–024128
Publication date
2 February 2026
Language
EN