Lattice dynamical probe of charge order and antipolar bilayer stacking in LuFe2O4

Xu, X.S.; Litvinchuk, A.P.; Angst, M.; Sales, B.C.; de Groot, J.; Sun, Q.-C.; Mandrus, D.; Musfeldt, J.L.

doi:10.1103/PhysRevB.82.14304

Journal Article

Lattice dynamical probe of charge order and antipolar bilayer stacking in LuFe2O4

Xu, X. S. ; de Groot, J.FZJ* ; Sun, Q.-C. ; Sales, B. C. ; Mandrus, D. ; Angst, M.FZJ* ; Litvinchuk, A. P. ; Musfeldt, J. L.

2010
APS College Park, Md.

Physical review / B 82, 014304 (2010) [10.1103/PhysRevB.82.14304]

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Please use a persistent id in citations: http://hdl.handle.net/2128/10970 doi:10.1103/PhysRevB.82.14304

Abstract: We investigated the infrared response of LuFe2O4 through the series of charge, magnetic, and structural transitions. All vibrational modes couple strongly to the charge order, whereas the LuO zone-folding modes are also sensitive to magnetic order and structural distortion. The dramatic splitting of the LuO2 layer mode is attributed to charge-rich/poor proximity effects and its temperature dependence reveals the antipolar nature of the W layer pattern.

Keyword(s): J

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Physics, Condensed Matter

Note: This work was supported by the Division of Materials Science and Engineering, Basic Energy Sciences, U.S. Department of Energy (UT and ORNL), the State of Texas through the Texas Center for Superconductivity (UH), and the Initiative and Networking Fund of the Helmholtz Association of German Research Centers through the Helmholtz-University Young Investigator Group Complex Ordering Phenomena in Multifunctional Oxides (Julich).

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Appears in the scientific report 2010

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