Magnetic excitations in multiferroic LuMnO3 studied by inelastic neutron scattering

被引：34

作者：

Lewtas, H. J. ^{[1
]}

Boothroyd, A. T. ^{[1
]}

Rotter, M. ^{[1
]}

Prabhakaran, D. ^{[1
]}

Mueller, H. ^{[2
]}

Le, M. D. ^{[3
]}

Roessli, B. ^{[4
]}

Gavilano, J. ^{[4
]}

Bourges, P. ^{[5
]}

机构：

[1] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[2] Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria

[3] Helmholtz Zentrum Berlin Mat & Energie, D-14109 Berlin, Germany

[4] Paul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

[5] CE Saclay, CEA CNRS, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 18期

基金：

英国工程与自然科学研究理事会;

关键词：

HEXAGONAL MANGANITES; DIFFRACTION; SYMMETRY; CRYSTAL; HOMNO3;

D O I：

10.1103/PhysRevB.82.184420

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present data on the magnetic and magnetoelastic coupling in the hexagonal multiferroic manganite LuMnO3 from inelastic neutron scattering, magnetization, and thermal-expansion measurements. We measured the magnon dispersion along the main symmetry directions and used this data to determine the principal exchange parameters from a spin-wave model. An analysis of the magnetic anisotropy in terms of the crystal field acting on the Mn is presented. We compare the results for LuMnO3 with data on other hexagonal RMnO3 compounds.

引用

页数：7

共 42 条

[1] STRUCTURE MAGNETIQUE DE MNYO3
BERTAUT, EF
MERCIER, M
[J]. PHYSICS LETTERS, 1963, 5 (01): : 27 - 29
[2] Multiferroicity induced by dislocated spin-density waves
Betouras, Joseph J.
Giovannetti, Gianluca
van den Brink, Jeroen
[J]. PHYSICAL REVIEW LETTERS, 2007, 98 (25)
[3] Neutron diffraction and polarimetric study of the magnetic and crystal structures of HoMnO3 and YMnO3
Brown, P. J.
Chatterji, T.
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2006, 18 (44) : 10085 - 10096
[4] Spin dynamics of YMnO3 studied via inelastic neutron scattering and the anisotropic Hubbard model
Chatterji, Tapan
Ghosh, S.
Singh, A.
Regnault, L. P.
Rheinstadter, M.
[J]. PHYSICAL REVIEW B, 2007, 76 (14)
[5] Multiferroics: a magnetic twist for ferroelectricity
Cheong, Sang-Wook
Mostovoy, Maxim
[J]. NATURE MATERIALS, 2007, 6 (01) : 13 - 20
[6] Multiferroic and magnetoelectric materials
Eerenstein, W.
Mathur, N. D.
Scott, J. F.
[J]. NATURE, 2006, 442 (7104) : 759 - 765
[7] Spin-Lattice Coupling, Frustration, and Magnetic Order in Multiferroic RMnO3
Fabreges, X.
Petit, S.
Mirebeau, I.
Pailhes, S.
Pinsard, L.
Forget, A.
Fernandez-Diaz, M. T.
Porcher, F.
[J]. PHYSICAL REVIEW LETTERS, 2009, 103 (06)
[8] Determination of the magnetic symmetry of hexagonal manganites by second harmonic generation
Fiebig, M
Fröhlich, D
Kohn, K
Leute, S
Lottermoser, T
Pavlov, VV
Pisarev, RV
[J]. PHYSICAL REVIEW LETTERS, 2000, 84 (24) : 5620 - 5623
[9] Observation of coupled magnetic and electric domains
Fiebig, M
Lottermoser, T
Fröhlich, D
Goltsev, AV
Pisarev, RV
[J]. NATURE, 2002, 419 (6909) : 818 - 820
[10] Revival of the magnetoelectric effect
Fiebig, M
[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2005, 38 (08) : R123 - R152

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