TY - JOUR
T1 - External magnetic field effects on a distorted kagome antiferromagnet
AU - Kim, J. H.
AU - Ji, S.
AU - Lee, S. H.
AU - Lake, B.
AU - Yildirim, T.
AU - Nojiri, H.
AU - Kikuchi, H.
AU - Habicht, K.
AU - Qiu, Y.
AU - Kiefer, K.
PY - 2008/9/2
Y1 - 2008/9/2
N2 - We report bulk magnetization, and elastic and inelastic neutron scattering measurements under an external magnetic field H on the weakly coupled distorted kagome system, Cu2(OD)3Cl. Our results show that the ordered state below 6.7 K is a canted antiferromagnet and consists of large antiferromagnetic ac components and smaller ferromagnetic b components. By first-principles calculations and linear spin wave analysis, we present a simple spin Hamiltonian with nonuniform nearest neighbor exchange interactions resulting in a system of coupled spin trimers with a single-ion anisotropy that can qualitatively reproduce the spin dynamics of Cu2(OD)3Cl.
AB - We report bulk magnetization, and elastic and inelastic neutron scattering measurements under an external magnetic field H on the weakly coupled distorted kagome system, Cu2(OD)3Cl. Our results show that the ordered state below 6.7 K is a canted antiferromagnet and consists of large antiferromagnetic ac components and smaller ferromagnetic b components. By first-principles calculations and linear spin wave analysis, we present a simple spin Hamiltonian with nonuniform nearest neighbor exchange interactions resulting in a system of coupled spin trimers with a single-ion anisotropy that can qualitatively reproduce the spin dynamics of Cu2(OD)3Cl.
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U2 - 10.1103/PhysRevLett.101.107201
DO - 10.1103/PhysRevLett.101.107201
M3 - Article
AN - SCOPUS:51149093908
VL - 101
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 10
M1 - 107201
ER -