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Ferromagnetic Coulomb phase in classical spin ice

Powell, Stephen

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Abstract

Spin ice is a frustrated magnetic system that at low temperatures exhibits a Coulomb phase, a classical spin liquid with topological order and deconfined excitations. This work establishes the presence of a Coulomb phase with coexisting ferromagnetic order in a microscopic model of classical spin ice subject to uniaxial lattice distortion. General theoretical arguments are presented for the presence of such a phase, and its existence is confirmed using Monte Carlo results. This example is used to illustrate generic properties of spin liquids with magnetic order, including deconfinement of monopoles, signatures in the neutron-scattering structure factor, and critical behavior at phase transitions. An analogous phase, a superfluid with spontaneously broken particle–hole symmetry, is demonstrated in a model of hard-core lattice bosons, related to spin ice through the quantum– classical correspondence

Journal Article Type Article
Publication Date Mar 27, 2015
Journal Physical Review B
Print ISSN 2469-9950
Electronic ISSN 2469-9969
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 91
Issue 9
Article Number 094431
APA6 Citation Powell, S. (2015). Ferromagnetic Coulomb phase in classical spin ice. Physical Review B, 91(9), https://doi.org/10.1103/PhysRevB.91.094431
DOI https://doi.org/10.1103/PhysRevB.91.094431
Publisher URL https://journals.aps.org/prb/abstract/10.1103/PhysRevB.91.094431
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information Ferromagnetic Coulomb phase in classical spin ice
Stephen Powell
Physical Review B, 91 094431 (2015)

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1412.1095v2.pdf (5.9 Mb)
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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