Dipolar anisotropy in quasi-2D honeycomb antiferromagnet MnPS3

The nature of the anisotropy in magnetic systems which show isotropic Heisenberg exchange is crucial in determining their magnetic properties. This is particularly true in low-dimensional systems in which the very existence of long-range order depends on the anisotropy. The honeycomb lattice MnPS 3...

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Bibliographic Details
Published inThe European physical journal. B, Condensed matter physics Vol. 78; no. 3; pp. 305 - 309
Main Author Goossens, D. J.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer-Verlag 01.12.2010
EDP Sciences
Subjects
Complex Systems
Condensed Matter Physics
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Fluid- and Aerodynamics
General theory and models of magnetic ordering
Magnetic anisotropy
Magnetic properties and materials
Magnetically ordered materials: other intrinsic properties
Physics
Physics and Astronomy
Solid State Physics
Near Neighbour
Anisotropy Energy
Dipolar Energy
Spin Direction
Honeycomb Lattice
Dipole dipole interaction
Honeycomb lattices
Two-dimensional systems
Magnetic anisotropy
Antiferromagnetic materials
Long-range order
Heisenberg model
Modelling
Spin flop
Manganese Thiophosphates
Magnetic properties
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ISSN1434-6028
1434-6036
DOI10.1140/epjb/e2010-10569-x

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Summary:The nature of the anisotropy in magnetic systems which show isotropic Heisenberg exchange is crucial in determining their magnetic properties. This is particularly true in low-dimensional systems in which the very existence of long-range order depends on the anisotropy. The honeycomb lattice MnPS 3 system has been studied as an example of a magnetically quasi-two-dimensional system of unusual symmetry. In this paper the effect of the dipole-dipole interaction in MnPS 3 on the magnetic ordering is explored through modelling. It is found that the dipolar anisotropy can explain the spin directions both in zero field and above the spin flop phase transition, but it is important that real rather than idealised atomic coordinates are used; this latter consideration is significant because in performing theoretical calculations, it may sometimes be assumed that small deviations away from the ideal can be ignored, but in truth they determine key aspects of the behaviour.
ISSN:1434-6028
1434-6036
DOI:10.1140/epjb/e2010-10569-x