External magnetic field effects on a distorted kagome antiferromagnet.
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.
Kim
J-H
JH
Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA.
Ji
S
S
Lee
S-H
SH
Lake
B
B
Yildirim
T
T
Nojiri
H
H
Kikuchi
H
H
Habicht
K
K
Qiu
Y
Y
Kiefer
K
K