TY - JOUR
T1 - Multiferroic FeTe 2O 5Br
T2 - Alternating spin chains with frustrated interchain interactions
AU - Pregelj, M.
AU - Jeschke, H. O.
AU - Feldner, H.
AU - Valentí, R.
AU - Honecker, A.
AU - Saha-Dasgupta, T.
AU - Das, H.
AU - Yoshii, S.
AU - Morioka, T.
AU - Nojiri, H.
AU - Berger, H.
AU - Zorko, A.
AU - Zaharko, O.
AU - Arčon, D.
PY - 2012/8/1
Y1 - 2012/8/1
N2 - A combination of density functional theory calculations, many-body model considerations, and magnetization and electron-spin-resonance measurements shows that the multiferroic FeTe 2O 5Br should be described as a system of alternating antiferromagnetic S=5/2 chains with strong Fe-O-Te-O-Fe bridges weakly coupled by two-dimensional frustrated interactions, rather than the previously reported tetramer model. The peculiar temperature dependence of the incommensurate magnetic vector can be explained in terms of interchain exchange striction being responsible for the emergent net electric polarization.
AB - A combination of density functional theory calculations, many-body model considerations, and magnetization and electron-spin-resonance measurements shows that the multiferroic FeTe 2O 5Br should be described as a system of alternating antiferromagnetic S=5/2 chains with strong Fe-O-Te-O-Fe bridges weakly coupled by two-dimensional frustrated interactions, rather than the previously reported tetramer model. The peculiar temperature dependence of the incommensurate magnetic vector can be explained in terms of interchain exchange striction being responsible for the emergent net electric polarization.
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U2 - 10.1103/PhysRevB.86.054402
DO - 10.1103/PhysRevB.86.054402
M3 - Article
AN - SCOPUS:84865034981
SN - 1098-0121
VL - 86
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 5
M1 - 054402
ER -