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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2010

Magnetoelectric MnPS3 thiophosphate as a new candidate for ferrotoroidicity

Résumé

We have revisited the magnetic structure of manganese phosphorus trisulfide MnPS3 using neutron diffrac- tion and polarimetry. MnPS3 undergoes a transition toward a collinear antiferromagnetic order at 78 K. The resulting magnetic point-group breaks both the time reversal and the space inversion thus allowing a linear magnetoelectric coupling. Neutron polarimetry was subsequently used to prove that this coupling provides a way to manipulate the antiferromagnetic domains simply by cooling the sample under crossed magnetic and electrical fields, in agreement with the nondiagonal form of the magnetoelectric tensor. In addition, this tensor has, in principle, an antisymmetric part that results in a toroidic moment and provides with a pure ferrotoroidic compound.
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Dates et versions

hal-00480720 , version 1 (04-05-2010)
hal-00480720 , version 2 (02-12-2010)

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Eric Ressouche, Mickael Loire, Virginie Simonet, Rafik Ballou, Anne Stunault, et al.. Magnetoelectric MnPS3 thiophosphate as a new candidate for ferrotoroidicity. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2010, 82, pp.100408(R). ⟨10.1103/PhysRevB.82.100408⟩. ⟨hal-00480720v2⟩
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