TY - JOUR
T1 - Multiferroic phase of doped delafossite CuFeO2 identified using inelastic neutron scattering
AU - Haraldsen, Jason T.
AU - Ye, Feng
AU - Fishman, Randy S.
AU - Fernandez-Baca, Jaime A.
AU - Yamaguchi, Yasuhiro
AU - Kimura, Kenta
AU - Kimura, Tsuyoshi
PY - 2010/7/16
Y1 - 2010/7/16
N2 - We report inelastic neutron scattering measurements that provide a distinct dynamical "fingerprint" for the multiferroic ground state of 3.5% Ga-doped CuFeO2. The complex ground state is stabilized by the displacement of the oxygen atoms, which contribute to the multiferroic coupling predicted in the "spin-driven" model. By comparing the observed and calculated spectrum of spin excitations, we conclude that the magnetic ground state is a distorted screw-type spin configuration with a distribution of turn angles.
AB - We report inelastic neutron scattering measurements that provide a distinct dynamical "fingerprint" for the multiferroic ground state of 3.5% Ga-doped CuFeO2. The complex ground state is stabilized by the displacement of the oxygen atoms, which contribute to the multiferroic coupling predicted in the "spin-driven" model. By comparing the observed and calculated spectrum of spin excitations, we conclude that the magnetic ground state is a distorted screw-type spin configuration with a distribution of turn angles.
UR - http://www.scopus.com/inward/record.url?scp=77956543067&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.82.020404
DO - 10.1103/PhysRevB.82.020404
M3 - Article
AN - SCOPUS:77956543067
SN - 1098-0121
VL - 82
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 2
M1 - 020404
ER -