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

被引：37

作者：

Xu, X. S. ^{[2
]}

de Groot, J. ^{[3
,4
]}

Sun, Q. -C. ^{[2
]}

Sales, B. C. ^{[1
]}

Mandrus, D. ^{[1
,5
]}

Angst, M. ^{[3
,4
]}

Litvinchuk, A. P. ^{[6
,7
]}

Musfeldt, J. L. ^{[2
]}

机构：

[1] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

[2] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA

[3] Forschungszentrum Julich, Inst Festkorperforsch, JCNS, D-52425 Julich, Germany

[4] Forschungszentrum Julich, JARA FIT, D-52425 Julich, Germany

[5] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[6] Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA

[7] Univ Houston, Dept Phys, Houston, TX 77204 USA

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 01期

关键词：

FERROELECTRICITY; SPECTROSCOPY; PHONON;

D O I：

10.1103/PhysRevB.82.014304

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：8

共 32 条

[31] Charge Order, Dynamics, and Magnetostructural Transition in Multiferroic LuFe2O4 [J].

Xu, X. S. ;

Angst, M. ;

Brinzari, T. V. ;

Hermann, R. P. ;

Musfeldt, J. L. ;

Christianson, A. D. ;

Mandrus, D. ;

Sales, B. C. ;

McGill, S. ;

Kim, J. -W. ;

Islam, Z. .

PHYSICAL REVIEW LETTERS, 2008, 101 (22)

[32] Electronic ferroelectricity, charge ordering and structural phase transitions in LuFe2O4(LuFeO3)n (n=0 and 1) [J].

Yang, Huaixin ;

Zhang, Ying ;

Qin, Yuanbin ;

Ma, Chao ;

Tian, Huanfan ;

Li, Jianqi .

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2010, 247 (04) :870-876

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