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Magnetic Field-Induced Instability of the Cooperative Paramagnetic State in ZnxCo4-x(OD)6Cl2



S. E. Dissanayake, C. Chan, S. Ji, J. Lee, Yiming Qiu, K. C. Rule, B. Lake, Mark Green, M. Hagihala, X. G. Zheng, T. K. Ng, S.-H. Lee


Using elastic and inelastic neutron scattering techniques with and without application of an external magnetic field H, the magnetic ground states of ZnxCo4-x(OD)6Cl2 (x=0,1) were studied. Our results show that for x=0, the ground state is a magnetic long ¿range ordered (LRO) state where each tetrahedron forms an ¿umbrella¿-type structure. On the other hand, for x=1, no static ordering was observed down to 1.5K, which resembles the behavior found in the isostructural quantum system ZnxCu4-x(OD)6Cl2. When H field is applied, however the x=1 system develops the same LRO state as x = 0. This indicates that the x = 1 disordered state is in the vicinity of the x= 0 ordered state.
Physical Review B


kagome lattice, neutron scattering


Dissanayake, S. , Chan, C. , Ji, S. , Lee, J. , Qiu, Y. , Rule, K. , Lake, B. , Green, M. , Hagihala, M. , Zheng, X. , Ng, T. and Lee, S. (2012), Magnetic Field-Induced Instability of the Cooperative Paramagnetic State in Zn<sub>x</sub>Co<sub>4-x</sub>(OD)<sub>6</sub>Cl<sub>2</sub>, Physical Review B, [online], (Accessed July 13, 2024)


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Created May 28, 2012, Updated October 12, 2021