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Title: Magnetic interactions in the geometrically frustrated triangular lattice antiferromagnet CuFeO{sub 2}.

Abstract

The spin-wave excitations of the geometrically frustrated triangular lattice antiferromagnet CuFeO2 have been measured using high resolution inelastic neutron scattering. Antiferromagnetic interactions up to third nearest neighbors in the ab plane (J1, J2, J3, with J2/J1{approx}0.44 and J3/J1{approx}0.57), as well as out-of-plane coupling (Jz, with Jz/J1{approx}0.29) are required to describe the spin-wave dispersion relations, indicating a three-dimensional character of the magnetic interactions. Two energy dips in the spin-wave dispersion occur at the incommensurate wave vectors associated with multiferroic phase and can be interpreted as dynamic precursors to the magnetoelectric behavior in this system.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Science Foundation (NSF)
OSTI Identifier:
919993
Report Number(s):
ANL/XSD/JA-60496
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US0806544
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Phys. Rev. Lett.
Additional Journal Information:
Journal Volume: 99; Journal Issue: Oct. 12, 2007; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
ENGLISH
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DISPERSION RELATIONS; NEUTRONS; RESOLUTION; SCATTERING; VECTORS

Citation Formats

Ye, F, Fernandez-Baca, J A, Fishman, R S, Ren, Y, Kang, H J, Qiu, Y, Kimura, T, X-Ray Science Division, ORNL,, Univ. of Tennesse, NIST,, Univ. of Maryland,, and Osaka Univ. Magnetic interactions in the geometrically frustrated triangular lattice antiferromagnet CuFeO{sub 2}.. United States: N. p., 2007. Web. doi:10.1103/PhysRevLett.99.157201.
Ye, F, Fernandez-Baca, J A, Fishman, R S, Ren, Y, Kang, H J, Qiu, Y, Kimura, T, X-Ray Science Division, ORNL,, Univ. of Tennesse, NIST,, Univ. of Maryland,, & Osaka Univ. Magnetic interactions in the geometrically frustrated triangular lattice antiferromagnet CuFeO{sub 2}.. United States. https://doi.org/10.1103/PhysRevLett.99.157201
Ye, F, Fernandez-Baca, J A, Fishman, R S, Ren, Y, Kang, H J, Qiu, Y, Kimura, T, X-Ray Science Division, ORNL,, Univ. of Tennesse, NIST,, Univ. of Maryland,, and Osaka Univ. 2007. "Magnetic interactions in the geometrically frustrated triangular lattice antiferromagnet CuFeO{sub 2}.". United States. https://doi.org/10.1103/PhysRevLett.99.157201.
@article{osti_919993,
title = {Magnetic interactions in the geometrically frustrated triangular lattice antiferromagnet CuFeO{sub 2}.},
author = {Ye, F and Fernandez-Baca, J A and Fishman, R S and Ren, Y and Kang, H J and Qiu, Y and Kimura, T and X-Ray Science Division and ORNL, and Univ. of Tennesse and NIST, and Univ. of Maryland, and Osaka Univ.},
abstractNote = {The spin-wave excitations of the geometrically frustrated triangular lattice antiferromagnet CuFeO2 have been measured using high resolution inelastic neutron scattering. Antiferromagnetic interactions up to third nearest neighbors in the ab plane (J1, J2, J3, with J2/J1{approx}0.44 and J3/J1{approx}0.57), as well as out-of-plane coupling (Jz, with Jz/J1{approx}0.29) are required to describe the spin-wave dispersion relations, indicating a three-dimensional character of the magnetic interactions. Two energy dips in the spin-wave dispersion occur at the incommensurate wave vectors associated with multiferroic phase and can be interpreted as dynamic precursors to the magnetoelectric behavior in this system.},
doi = {10.1103/PhysRevLett.99.157201},
url = {https://www.osti.gov/biblio/919993}, journal = {Phys. Rev. Lett.},
issn = {0031-9007},
number = Oct. 12, 2007,
volume = 99,
place = {United States},
year = {Fri Oct 12 00:00:00 EDT 2007},
month = {Fri Oct 12 00:00:00 EDT 2007}
}