Article (Scientific journals)
Monopole-based formalism for the diagonal magnetoelectric response
Spaldin, Nicola A.; Fechner, Michael; Bousquet, Eric et al.
2013In Physical Review. B, Condensed Matter and Materials Physics, 88, p. 094429
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Abstract :
[en] We develop the formalism of the macroscopic monopolization—that is, the magnetoelectric monopole moment per unit volume—in periodic solids, and discuss its relationship to the magnetoelectric effect. For the series of lithium transition metal phosphate compounds, we use first-principles density functional theory to calculate the contributions to the macroscopic monopolization from the global distribution of magnetic moments within the unit cell, as well as from the distribution of magnetization around the atomic sites. We find one example within the series (LiMnPO4) that shows a macroscopic monopolization corresponding to a ferromonopolar ordering consistent with its diagonal magnetoelectric response. The other members of the series (LiMPO4, with M=Co, Fe, and Ni) have zero net monopolization but have antiferromonopolar orderings that should lead to q-dependent diagonal magnetoelectric effects.
Disciplines :
Physics
Author, co-author :
Spaldin, Nicola A.
Fechner, Michael
Bousquet, Eric  ;  Université de Liège - ULiège > Département de physique > Physique théorique des matériaux
Balatsky, Alexander
Nordström, Lars
Language :
English
Title :
Monopole-based formalism for the diagonal magnetoelectric response
Publication date :
2013
Journal title :
Physical Review. B, Condensed Matter and Materials Physics
ISSN :
1098-0121
eISSN :
1550-235X
Publisher :
American Physical Society
Volume :
88
Pages :
094429
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 29 October 2013

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